thr3ads.net - dovecot - Dovecot & OAuth [Dec 2019]

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mizuki

2019-Dec-05 19:58 UTC

Dovecot & OAuth

Hi all,

We'd like to enable OAuth with Keycloak in Dovecot, after enabling
'OAUTHBEARER XOAUTH2' in Dovecot based on online document, I can confirm
Dovecot is ready for OAuth using openssl command, however when the auth
request comes in, it failed in establishing a SSL connection with Keycloak
server on port 443, shown as following in debug logs. I can confirming
using commands 'openssl s_client -connect <keycloak_server>:443'
or 'curl
-v https://<keycloak_server/' all returns normal and no errors. Altering
some of the SSL options in dovecot such as 'ssl_ca
</etc/pki/CA/certs/root_ca.pem' or 'ssl_client_ca_file
</etc/pki/CA/certs/root_ca.pem' does not help either. The certificate are
NOT self-signed but signed the legit authorities. So I'm not sure why
dovecot could not establish the connections.

*Debug logs:*
----------------------------------------------------
Dec  5 14:32:07 mktst4 dovecot: auth: Debug: auth client connected
(pid=16554)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: client in:
AUTH#0111#011OAUTHBEARER#011service=imap#011secured#011session=QPwA/fmY+tqCx5Tr#011lip=130.199.148.187#011rip=10.0.2.1#011lport=993#011rport=56058#011resp=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(previous
base64 data may contain sensitive data)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host example.com:
Host created
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host example.com:
Performing asynchronous DNS lookup
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request [Req1:
GET
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
Submitted
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host example.com:
DNS lookup successful; got 1 IPs
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443:
Peer created
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com"443: Setting up connection to 10.0.2.2:443
(SSLexample.com) (1 requests pending)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443:
Linked queue https://example.com:443 (1 queues linked)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com:443: Started new connection to 10.0.2.2:443 (SSLexample.com)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443:
Creating 1 new connections to handle requests (already 0 usable, connecting
to 0, closing 0)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443:
Making new connection 1 of 1
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
[0]: HTTPS connection created (1 parallel connections exist)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
[0]: Connected
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
[0]: Starting SSL handshake
Dec  5 14:32:22 mktst4 dovecot: auth: Received invalid SSL certificate:
unable to get issuer certificate: /C=US/ST=New Jersey/L=Jersey City/O=The
USERTRUST Network/CN=USERTrust RSA Certification Authority
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443:
Failed to make connection (connections=1, connecting=1)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com:443: Failed to set up connection to 10.0.2.2:443
(SSLexample.com): SSL handshaking with 10.0.2.2:443 failed: read(SSL
10.0.2.2:443) failed: Received invalid SSL certificate: unable to get
issuer certificate: /C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST
Network/CN=USERTrust RSA Certification Authority (1 peers pending, 1
requests pending)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com:443: Failed to set up any connection; failing all
queued requests
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443:
Unlinked queue https://example.com:443 (0 queues linked)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com:443: Dropping request [Req1: GET
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q
]
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host example.com:
Host is idle (timeout = 1799992 msecs)
Dec  5 14:32:22 mktst4 dovecot: auth: Error:
oauth2(mizuki,10.0.2.1,<QPwA/fmY+tqCx5Tr>): oauth2 failed: SSL handshaking
with 10.0.2.2:443 failed: read(SSL 10.0.2.2:443) failed: Received invalid
SSL certificate: unable to get issuer certificate: /C=US/ST=New
Jersey/L=Jersey City/O=The USERTRUST Network/CN=USERTrust RSA Certification
Authority
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request [Req1:
GET
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
Destroy (requests left=1)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request [Req1:
GET
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
Free (requests left=0)
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
[0]: SSL handshaking with 10.0.2.2:443 failed: read(SSL 10.0.2.2:443)
failed: Received invalid SSL certificate: unable to get issuer certificate:
/C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USERTrust RSA
Certification Authority
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
[0]: Connection close
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
[0]: Connection disconnect
Dec  5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
[0]: Connection destroy
----------------------------------------------------

*#dovecot -n *
----------------------------------------------------
# 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf
# OS: Linux 3.10.0-1062.4.3.el7.x86_64 x86_64 Red Hat Enterprise Linux
Server release 7.7 (Maipo)
# Hostname: mktst4.sdcc.bnl.gov
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = oauthbearer xoauth2
auth_verbose = yes
auth_verbose_passwords = yes
first_valid_uid = 1000
mail_debug = yes
mail_location = maildir:~/Maildir
mbox_write_locks = fcntl
namespace inbox {
  inbox = yes
  location   mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix }
passdb {
  args = /etc/dovecot/dovecot-oauth2.conf.ext
  driver = oauth2
  mechanisms = oauthbearer xoauth2
}
protocols = imap
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
}
ssl = required
ssl_ca = </etc/pki/CA/certs/2.pem
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_cipher_list
ECDH+AESGCM:ECDH+CHACHA20:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:!aNULL:!MD5:!DSS:!RSA
ssl_client_ca_file = </etc/pki/CA/certs/2.pem
ssl_key =  # hidden, use -P to show it
ssl_prefer_server_ciphers = yes
ssl_require_crl = no
userdb {
  args = uid=vmail gid=vmail home=/var/vmail/%u
  driver = static
}
----------------------------------------------------

*# cat /etc/dovecot/conf.d/auth-oauth2.conf.ext*
----------------------------------------------------
passdb {
  driver = oauth2
  mechanisms = oauthbearer xoauth2
  args = /etc/dovecot/dovecot-oauth2.conf.ext
}

userdb {
  driver = static
  args = uid=vmail gid=vmail home=/var/vmail/%u
}
----------------------------------------------------

I wonder if anyone has experienced this possibly know what's going on.
Thanks!
Mizuki
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Aki Tuomi

2019-Dec-05 20:06 UTC

head link

Dovecot & OAuth

Before declaring it not ready for prime time, did you try setting

tls_ca_cert_file = /etc/ssl/certs/ca-certificates.crt

In the oauth2 configuration file as documented in
https://doc.dovecot.org/configuration_manual/authentication/oauth2 ?

Aki
> On 05/12/2019 21:58 mizuki via dovecot <dovecot at dovecot.org>
wrote:
> 
> 
> Hi all,
> 
> We'd like to enable OAuth with Keycloak in Dovecot, after enabling
'OAUTHBEARER XOAUTH2' in Dovecot based on online document, I can confirm
Dovecot is ready for OAuth using openssl command, however when the auth request
comes in, it failed in establishing a SSL connection with Keycloak server on
port 443, shown as following in debug logs. I can confirming using commands
'openssl s_client -connect <keycloak_server>:443' or 'curl -v
https://<keycloak_server/' all returns normal and no errors. Altering
some of the SSL options in dovecot such as 'ssl_ca =
</etc/pki/CA/certs/root_ca.pem' or 'ssl_client_ca_file =
</etc/pki/CA/certs/root_ca.pem' does not help either. The certificate are
NOT self-signed but signed the legit authorities. So I'm not sure why
dovecot could not establish?the connections.
> 
> Debug logs:
> ----------------------------------------------------
> Dec 5 14:32:07 mktst4 dovecot: auth: Debug: auth client connected
(pid=16554)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: client in:
AUTH#0111#011OAUTHBEARER#011service=imap#011secured#011session=QPwA/fmY+tqCx5Tr#011lip=130.199.148.187#011rip=10.0.2.1#011lport=993#011rport=56058#011resp=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
(previous base64 data may contain sensitive data)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host example.com
(http://example.com): Host created
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host example.com
(http://example.com): Performing asynchronous DNS lookup
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request [Req1: GET
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
Submitted
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host example.com
(http://example.com): DNS lookup successful; got 1 IPs
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443
(http://10.0.2.2:443): Peer created
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com"443: Setting up connection to 10.0.2.2:443
(http://10.0.2.2:443) (SSL=example.com (http://example.com)) (1 requests
pending)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443
(http://10.0.2.2:443): Linked queue https://example.com:443 (1 queues linked)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com:443: Started new connection to 10.0.2.2:443
(http://10.0.2.2:443) (SSL=example.com (http://example.com))
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443
(http://10.0.2.2:443): Creating 1 new connections to handle requests (already 0
usable, connecting to 0, closing 0)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443
(http://10.0.2.2:443): Making new connection 1 of 1
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
(http://10.0.2.2:443) [0]: HTTPS connection created (1 parallel connections
exist)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
(http://10.0.2.2:443) [0]: Connected
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
(http://10.0.2.2:443) [0]: Starting SSL handshake
> Dec 5 14:32:22 mktst4 dovecot: auth: Received invalid SSL certificate:
unable to get issuer certificate: /C=US/ST=New Jersey/L=Jersey City/O=The
USERTRUST Network/CN=USERTrust RSA Certification Authority
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443
(http://10.0.2.2:443): Failed to make connection (connections=1, connecting=1)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com:443: Failed to set up connection to 10.0.2.2:443
(http://10.0.2.2:443) (SSL=example.com (http://example.com)): SSL handshaking
with 10.0.2.2:443 (http://10.0.2.2:443) failed: read(SSL 10.0.2.2:443
(http://10.0.2.2:443)) failed: Received invalid SSL certificate: unable to get
issuer certificate: /C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST
Network/CN=USERTrust RSA Certification Authority (1 peers pending, 1 requests
pending)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com:443: Failed to set up any connection; failing all queued
requests
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer 10.0.2.2:443
(http://10.0.2.2:443): Unlinked queue https://example.com:443 (0 queues linked)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
https://example.com:443: Dropping request [Req1: GET
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host example.com
(http://example.com): Host is idle (timeout = 1799992 msecs)
> Dec 5 14:32:22 mktst4 dovecot: auth: Error:
oauth2(mizuki,10.0.2.1,<QPwA/fmY+tqCx5Tr>): oauth2 failed: SSL handshaking
with 10.0.2.2:443 (http://10.0.2.2:443) failed: read(SSL 10.0.2.2:443
(http://10.0.2.2:443)) failed: Received invalid SSL certificate: unable to get
issuer certificate: /C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST
Network/CN=USERTrust RSA Certification Authority
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request [Req1: GET
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.eyJqdGkiOiI4NWJlYWNmNC1jMmNlLTRmNDItYmQ4MS01NzViN2FjYWNlOTgiLCJleHAiOjE1NzU2MTAyMDgsIm5iZiI6MCwiaWF0IjoxNTc1NTc0MjA4LCJpc3MiOiJodHRwczovL2tleWNsb2FrMi5zZGNjLmJubC5nb3YvYXV0aC9yZWFsbXMvbWFpbCIsImF1ZCI6ImFjY291bnQiLCJzdWIiOiI2NjVkNDU3My04YWE1LTRkODYtYmMzZi0yZTJjMjNiMzY2NDUiLCJ0eXAiOiJCZWFyZXIiLCJhenAiOiJkb3ZlY290IiwiYXV0aF90aW1lIjowLCJzZXNzaW9uX3N0YXRlIjoiOTM4NWE5NjAtMDNkZC00OGNlLWEyN2QtYTY3ZGY0NmQxZDg1IiwiYWNyIjoiMSIsInJlYWxtX2FjY2VzcyI6eyJyb2xlcyI6WyJvZmZsaW5lX2FjY2VzcyIsInVtYV9hdXRob3JpemF0aW9uIl19LCJyZXNvdXJjZV9hY2Nlc3MiOnsiYWNjb3VudCI6eyJyb2xlcyI6WyJtYW5hZ2UtYWNjb3VudCIsIm1hbmFnZS1hY2NvdW50LWxpbmtzIiwidmlldy1wcm9maWxlIl19fSwic2NvcGUiOiJwcm9maWxlIGVtYWlsIiwiZW1haWxfdmVyaWZpZWQiOmZhbHNlLCJuYW1lIjoiTWl6dWtpIEthcmFzYXdhIiwicHJlZmVycmVkX3VzZXJuYW1lIjoibWl6dWtpIiwiZ2l2ZW5fbmFtZSI6Ik1penVraSIsImZhbWlseV9uYW1lIjoiS2FyYXNhd2EiLCJlbWFpbCI6Im1penVraUBibmwuZ292In0.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
Destroy (requests left=1)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request [Req1: GET
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
Free (requests left=0)
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
(http://10.0.2.2:443) [0]: SSL handshaking with 10.0.2.2:443
(http://10.0.2.2:443) failed: read(SSL 10.0.2.2:443 (http://10.0.2.2:443))
failed: Received invalid SSL certificate: unable to get issuer certificate:
/C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USERTrust RSA
Certification Authority
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
(http://10.0.2.2:443) [0]: Connection close
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
(http://10.0.2.2:443) [0]: Connection disconnect
> Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn 10.0.2.2:443
(http://10.0.2.2:443) [0]: Connection destroy
> ----------------------------------------------------
> 
> #dovecot -n
> ----------------------------------------------------
> # 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf
> # OS: Linux 3.10.0-1062.4.3.el7.x86_64 x86_64 Red Hat Enterprise Linux
Server release 7.7 (Maipo)
> # Hostname: mktst4.sdcc.bnl.gov (http://mktst4.sdcc.bnl.gov)
> auth_debug = yes
> auth_debug_passwords = yes
> auth_mechanisms = oauthbearer xoauth2
> auth_verbose = yes
> auth_verbose_passwords = yes
> first_valid_uid = 1000
> mail_debug = yes
> mail_location = maildir:~/Maildir
> mbox_write_locks = fcntl
> namespace inbox {
>  inbox = yes
>  location >  mailbox Drafts {
>  special_use = \Drafts
>  }
>  mailbox Junk {
>  special_use = \Junk
>  }
>  mailbox Sent {
>  special_use = \Sent
>  }
>  mailbox "Sent Messages" {
>  special_use = \Sent
>  }
>  mailbox Trash {
>  special_use = \Trash
>  }
>  prefix > }
> passdb {
>  args = /etc/dovecot/dovecot-oauth2.conf.ext
>  driver = oauth2
>  mechanisms = oauthbearer xoauth2
> }
> protocols = imap
> service auth {
>  unix_listener /var/spool/postfix/private/auth {
>  group = postfix
>  mode = 0666
>  user = postfix
>  }
> }
> ssl = required
> ssl_ca = </etc/pki/CA/certs/2.pem
> ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
> ssl_cipher_list =
ECDH+AESGCM:ECDH+CHACHA20:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:!aNULL:!MD5:!DSS:!RSA
> ssl_client_ca_file = </etc/pki/CA/certs/2.pem
> ssl_key = # hidden, use -P to show it
> ssl_prefer_server_ciphers = yes
> ssl_require_crl = no
> userdb {
>  args = uid=vmail gid=vmail home=/var/vmail/%u
>  driver = static
> }
> ----------------------------------------------------
> 
> # cat /etc/dovecot/conf.d/auth-oauth2.conf.ext
> ----------------------------------------------------
> passdb {
>  driver = oauth2
>  mechanisms = oauthbearer xoauth2
>  args = /etc/dovecot/dovecot-oauth2.conf.ext
> }
> 
> userdb {
>  driver = static
>  args = uid=vmail gid=vmail home=/var/vmail/%u
> }
> ----------------------------------------------------
> 
> I wonder if anyone has experienced this possibly know what's going on.
> Thanks!
> Mizuki

mizuki

2019-Dec-06 02:16 UTC

head link

Dovecot & OAuth

I changed some of the tls options following the document, now config is
following:


tokeninfo_url
https://keycloak.com/auth/realms/mail/protocol/openid-connect/token
introspection_url https://dovecot:7598e21b-ec34-481f-80d0-059bddae0923 at
keycloak.com/auth/realms/demo/protocol/openid-connect/token/introspect
introspection_mode = post
debug = yes
rawlog_dir = /tmp/oauth2
#force_introspection = yes
username_attribute = username
#active_attribute = active
#active_value = true
tls_ca_cert_file = /etc/pki/CA/certs/incommon-rsa-server-ca.crt
tls_cert_file = /etc/pki/dovecot/certs/dovecot.pem
tls_key_file = /etc/pki/dovecot/private/dovecot.pem
---------------

The debug log is showing now slightly different msg ex:
Dec  5 21:09:59 mktst4 dovecot: auth: Error:
oauth2(mizuki,10.0.2.1,<29b4iv+YKuuCx5Tr>): oauth2 failed: Couldn't
initialize SSL context: Can't load SSL certificate: There is no valid PEM
certificate.

Still not able to connect to the keyclaok server.  :(

PS: Dovecot & Keycloak severs are both using the same legit cert/key pair
with CA file configured.

Thanks!
Mizuki


On Thu, Dec 5, 2019 at 3:06 PM Aki Tuomi <aki.tuomi at open-xchange.com>
wrote:
> Before declaring it not ready for prime time, did you try setting
>
> tls_ca_cert_file = /etc/ssl/certs/ca-certificates.crt
>
> In the oauth2 configuration file as documented in
> https://doc.dovecot.org/configuration_manual/authentication/oauth2 ?
>
> Aki
>
> > On 05/12/2019 21:58 mizuki via dovecot <dovecot at dovecot.org>
wrote:
> >
> >
> > Hi all,
> >
> > We'd like to enable OAuth with Keycloak in Dovecot, after enabling
> 'OAUTHBEARER XOAUTH2' in Dovecot based on online document, I can
confirm
> Dovecot is ready for OAuth using openssl command, however when the auth
> request comes in, it failed in establishing a SSL connection with Keycloak
> server on port 443, shown as following in debug logs. I can confirming
> using commands 'openssl s_client -connect
<keycloak_server>:443' or 'curl
> -v https://<keycloak_server/' all returns normal and no errors.
Altering
> some of the SSL options in dovecot such as 'ssl_ca >
</etc/pki/CA/certs/root_ca.pem' or 'ssl_client_ca_file >
</etc/pki/CA/certs/root_ca.pem' does not help either. The certificate are
> NOT self-signed but signed the legit authorities. So I'm not sure why
> dovecot could not establish the connections.
> >
> > Debug logs:
> > ----------------------------------------------------
> > Dec 5 14:32:07 mktst4 dovecot: auth: Debug: auth client connected
> (pid=16554)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: client in:
>
AUTH#0111#011OAUTHBEARER#011service=imap#011secured#011session=QPwA/fmY+tqCx5Tr#011lip=130.199.148.187#011rip=10.0.2.1#011lport=993#011rport=56058#011resp=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>
(previous base64 data may contain sensitive data)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host
> example.com (http://example.com): Host created
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host
> example.com (http://example.com): Performing asynchronous DNS lookup
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request
[Req1:
> GET
>
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
> Submitted
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host
> example.com (http://example.com): DNS lookup successful; got 1 IPs
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer
> 10.0.2.2:443 (http://10.0.2.2:443): Peer created
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
> https://example.com"443: Setting up connection to 10.0.2.2:443 (
> http://10.0.2.2:443) (SSL=example.com (http://example.com)) (1 requests
> pending)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer
> 10.0.2.2:443 (http://10.0.2.2:443): Linked queue https://example.com:443
> (1 queues linked)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
> https://example.com:443: Started new connection to 10.0.2.2:443 (
> http://10.0.2.2:443) (SSL=example.com (http://example.com))
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer
> 10.0.2.2:443 (http://10.0.2.2:443): Creating 1 new connections to handle
> requests (already 0 usable, connecting to 0, closing 0)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer
> 10.0.2.2:443 (http://10.0.2.2:443): Making new connection 1 of 1
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn
> 10.0.2.2:443 (http://10.0.2.2:443) [0]: HTTPS connection created (1
> parallel connections exist)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn
> 10.0.2.2:443 (http://10.0.2.2:443) [0]: Connected
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn
> 10.0.2.2:443 (http://10.0.2.2:443) [0]: Starting SSL handshake
> > Dec 5 14:32:22 mktst4 dovecot: auth: Received invalid SSL certificate:
> unable to get issuer certificate: /C=US/ST=New Jersey/L=Jersey City/O=The
> USERTRUST Network/CN=USERTrust RSA Certification Authority
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer
> 10.0.2.2:443 (http://10.0.2.2:443): Failed to make connection
> (connections=1, connecting=1)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
> https://example.com:443: Failed to set up connection to 10.0.2.2:443 (
> http://10.0.2.2:443) (SSL=example.com (http://example.com)): SSL
> handshaking with 10.0.2.2:443 (http://10.0.2.2:443) failed: read(SSL
> 10.0.2.2:443 (http://10.0.2.2:443)) failed: Received invalid SSL
> certificate: unable to get issuer certificate: /C=US/ST=New Jersey/L=Jersey
> City/O=The USERTRUST Network/CN=USERTrust RSA Certification Authority (1
> peers pending, 1 requests pending)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
> https://example.com:443: Failed to set up any connection; failing all
> queued requests
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: peer
> 10.0.2.2:443 (http://10.0.2.2:443): Unlinked queue https://example.com:443
> (0 queues linked)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: queue
> https://example.com:443: Dropping request [Req1: GET
>
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.eyJqdGkiOiI4NWJlYWNmNC1jMmNlLTRmNDItYmQ4MS01NzViN2FjYWNlOTgiLCJleHAiOjE1NzU2MTAyMDgsIm5iZiI6MCwiaWF0IjoxNTc1NTc0MjA4LCJpc3MiOiJodHRwczovL2tleWNsb2FrMi5zZGNjLmJubC5nb3YvYXV0aC9yZWFsbXMvbWFpbCIsImF1ZCI6ImFjY291bnQiLCJzdWIiOiI2NjVkNDU3My04YWE1LTRkODYtYmMzZi0yZTJjMjNiMzY2NDUiLCJ0eXAiOiJCZWFyZXIiLCJhenAiOiJkb3ZlY290IiwiYXV0aF90aW1lIjowLCJzZXNzaW9uX3N0YXRlIjoiOTM4NWE5NjAtMDNkZC00OGNlLWEyN2QtYTY3ZGY0NmQxZDg1IiwiYWNyIjoiMSIsInJlYWxtX2FjY2VzcyI6eyJyb2xlcyI6WyJvZmZsaW5lX2FjY2VzcyIsInVtYV9hdXRob3JpemF0aW9uIl19LCJyZXNvdXJjZV9hY2Nlc3MiOnsiYWNjb3VudCI6eyJyb2xlcyI6WyJtYW5hZ2UtYWNjb3VudCIsIm1hbmFnZS1hY2NvdW50LWxpbmtzIiwidmlldy1wcm9maWxlIl19fSwic2NvcGUiOiJwcm9maWxlIGVtYWlsIiwiZW1haWxfdmVyaWZpZWQiOmZhbHNlLCJuYW1lIjoiTWl6dWtpIEthcmFzYXdhIiwicHJlZmVycmVkX3VzZXJuYW1lIjoibWl6dWtpIiwiZ2l2ZW5fbmFtZSI6Ik1penVraSIsImZhbWlseV9uYW1lIjoiS2FyYXNhd2EiLCJlbWFpbCI6Im1penVraUBibmwuZ292In0.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q
> ]
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: host
> example.com (http://example.com): Host is idle (timeout = 1799992 msecs)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Error:
> oauth2(mizuki,10.0.2.1,<QPwA/fmY+tqCx5Tr>): oauth2 failed: SSL
handshaking
> with 10.0.2.2:443 (http://10.0.2.2:443) failed: read(SSL 10.0.2.2:443 (
> http://10.0.2.2:443)) failed: Received invalid SSL certificate: unable to
> get issuer certificate: /C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST
> Network/CN=USERTrust RSA Certification Authority
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request
[Req1:
> GET
>
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.eyJqdGkiOiI4NWJlYWNmNC1jMmNlLTRmNDItYmQ4MS01NzViN2FjYWNlOTgiLCJleHAiOjE1NzU2MTAyMDgsIm5iZiI6MCwiaWF0IjoxNTc1NTc0MjA4LCJpc3MiOiJodHRwczovL2tleWNsb2FrMi5zZGNjLmJubC5nb3YvYXV0aC9yZWFsbXMvbWFpbCIsImF1ZCI6ImFjY291bnQiLCJzdWIiOiI2NjVkNDU3My04YWE1LTRkODYtYmMzZi0yZTJjMjNiMzY2NDUiLCJ0eXAiOiJCZWFyZXIiLCJhenAiOiJkb3ZlY290IiwiYXV0aF90aW1lIjowLCJzZXNzaW9uX3N0YXRlIjoiOTM4NWE5NjAtMDNkZC00OGNlLWEyN2QtYTY3ZGY0NmQxZDg1IiwiYWNyIjoiMSIsInJlYWxtX2FjY2VzcyI6eyJyb2xlcyI6WyJvZmZsaW5lX2FjY2VzcyIsInVtYV9hdXRob3JpemF0aW9uIl19LCJyZXNvdXJjZV9hY2Nlc3MiOnsiYWNjb3VudCI6eyJyb2xlcyI6WyJtYW5hZ2UtYWNjb3VudCIsIm1hbmFnZS1hY2NvdW50LWxpbmtzIiwidmlldy1wcm9maWxlIl19fSwic2NvcGUiOiJwcm9maWxlIGVtYWlsIiwiZW1haWxfdmVyaWZpZWQiOmZhbHNlLCJuYW1lIjoiTWl6dWtpIEthcmFzYXdhIiwicHJlZmVycmVkX3VzZXJuYW1lIjoibWl6dWtpIiwiZ2l2ZW5fbmFtZSI6Ik1penVraSIsImZhbWlseV9uYW1lIjoiS2FyYXNhd2EiLCJlbWFpbCI6Im1penVraUBibmwuZ292In0.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
> Destroy (requests left=1)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: request
[Req1:
> GET
>
https://example.com/auth/realms/mail/protocol/openid-connect/tokeneyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJrdGxNSHVmbG54VTRiRGZKNndHdmxPMUV1YlVwakxFUVhHcnFMNTc3aHBRIn0.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.Me4p6ItvlvOEXE213jpJrikqadcYoFl2yLVRsA2oA7fX8-xKIa4vrFfjl0-tpobhw22FpoT6vMj1mza-pVYLs5mo3L9cLJOhUVuvNoXJngfTs-y6MlnMuFWSPzkbtHa9rSPEjdaYApCBNv0oBXK6nhH3E9fCoN_SBU2qlZIi63WV9FWJ1kluFOb0sLckb_XcFg8TgGW8GURTXNX8mmU3WM-byvrnNAr6acYmbmtZW4aWCpNNEHtYSoKJh2tvnB8G6yyyjmYbyCfaNl0JuYaNvTQ3MxB_ag-_Os-8VL-LaKtpFapL4EMYBZ_1gfcaHWTIEuU-0IWcN9DklqqmL7_c6Q]:
> Free (requests left=0)
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn
> 10.0.2.2:443 (http://10.0.2.2:443) [0]: SSL handshaking with 10.0.2.2:443
> (http://10.0.2.2:443) failed: read(SSL 10.0.2.2:443 (http://10.0.2.2:443))
> failed: Received invalid SSL certificate: unable to get issuer certificate:
> /C=US/ST=New Jersey/L=Jersey City/O=The USERTRUST Network/CN=USERTrust RSA
> Certification Authority
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn
> 10.0.2.2:443 (http://10.0.2.2:443) [0]: Connection close
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn
> 10.0.2.2:443 (http://10.0.2.2:443) [0]: Connection disconnect
> > Dec 5 14:32:22 mktst4 dovecot: auth: Debug: http-client: conn
> 10.0.2.2:443 (http://10.0.2.2:443) [0]: Connection destroy
> > ----------------------------------------------------
> >
> > #dovecot -n
> > ----------------------------------------------------
> > # 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf
> > # OS: Linux 3.10.0-1062.4.3.el7.x86_64 x86_64 Red Hat Enterprise Linux
> Server release 7.7 (Maipo)
> > # Hostname: mktst4.sdcc.bnl.gov (http://mktst4.sdcc.bnl.gov)
> > auth_debug = yes
> > auth_debug_passwords = yes
> > auth_mechanisms = oauthbearer xoauth2
> > auth_verbose = yes
> > auth_verbose_passwords = yes
> > first_valid_uid = 1000
> > mail_debug = yes
> > mail_location = maildir:~/Maildir
> > mbox_write_locks = fcntl
> > namespace inbox {
> >  inbox = yes
> >  location > >  mailbox Drafts {
> >  special_use = \Drafts
> >  }
> >  mailbox Junk {
> >  special_use = \Junk
> >  }
> >  mailbox Sent {
> >  special_use = \Sent
> >  }
> >  mailbox "Sent Messages" {
> >  special_use = \Sent
> >  }
> >  mailbox Trash {
> >  special_use = \Trash
> >  }
> >  prefix > > }
> > passdb {
> >  args = /etc/dovecot/dovecot-oauth2.conf.ext
> >  driver = oauth2
> >  mechanisms = oauthbearer xoauth2
> > }
> > protocols = imap
> > service auth {
> >  unix_listener /var/spool/postfix/private/auth {
> >  group = postfix
> >  mode = 0666
> >  user = postfix
> >  }
> > }
> > ssl = required
> > ssl_ca = </etc/pki/CA/certs/2.pem
> > ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
> > ssl_cipher_list >
ECDH+AESGCM:ECDH+CHACHA20:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:!aNULL:!MD5:!DSS:!RSA
> > ssl_client_ca_file = </etc/pki/CA/certs/2.pem
> > ssl_key = # hidden, use -P to show it
> > ssl_prefer_server_ciphers = yes
> > ssl_require_crl = no
> > userdb {
> >  args = uid=vmail gid=vmail home=/var/vmail/%u
> >  driver = static
> > }
> > ----------------------------------------------------
> >
> > # cat /etc/dovecot/conf.d/auth-oauth2.conf.ext
> > ----------------------------------------------------
> > passdb {
> >  driver = oauth2
> >  mechanisms = oauthbearer xoauth2
> >  args = /etc/dovecot/dovecot-oauth2.conf.ext
> > }
> >
> > userdb {
> >  driver = static
> >  args = uid=vmail gid=vmail home=/var/vmail/%u
> > }
> > ----------------------------------------------------
> >
> > I wonder if anyone has experienced this possibly know what's going
on.
> > Thanks!
> > Mizuki
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