dovecot - Feb 2018 - Why does dovecot reject password when authorizing by a certificate?

We have FreeBSD-server with dovecot installed on it as IMAP-server. My user and
password database is a text file with plaintext passwords. Clients connect to
imap-server via TLS protocol and plaintext password. All works fine. But I want
to configure ability to authorize with a client certificates. I have generated a
client certificate and imported it to email-client. Also I have configured
dovecot to verify client certificates. But email-client cannot
authorize:?Password mismatch. Why dovecot reject my password in this case?
Please help!

My log:dovecot: imap-login: Valid certificate: /C=UA/ST=Kyiv/L=Kyiv/O=Contoso
Ltd: user=<>, rip=10.1.1.59, lip=10.1.1.99, TLS handshaking,
session=<fp5P5SBkhtMKAQE7>
dovecot: imap-login: Valid certificate: /C=UA/ST=Kyiv/O=Contoso
Ltd/OU=IT/CN=sysadmin/emailAddress=sysadmin at contoso.ua: user=<>,
rip=10.1.1.59, lip=10.1.1.99, TLS handshaking, session=<fp5P5SBkhtMKAQE7>
dovecot: auth: passwd-file(sysadmin,10.1.1.59,<fp5P5SBkhtMKAQE7>):
Password mismatch
dovecot: imap-login: Disconnected (auth failed, 1 attempts in 6 secs):
user=<sysadmin>, method=EXTERNAL, rip=10.1.1.59, lip=10.1.1.99, TLS,
session=<fp5P5SBkhtMKAQE7>


My configuration:
# 2.2.24 (a82c823): /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 10.2-RELEASE-p20 amd64? ufs
auth_debug = yes
auth_mechanisms = plain login external
auth_ssl_require_client_cert = yes
auth_ssl_username_from_cert = yes
auth_username_format = %Ln
auth_verbose = yes
disable_plaintext_auth = no
lda_mailbox_autocreate = yes
mail_debug = yes
mail_gid = 999
mail_location = maildir:/mnt/mail/%n
mail_uid = 999
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 = /usr/local/etc/dovecot/users
? driver = passwd-file
}
protocols = imap pop3
service auth {
? unix_listener /var/spool/postfix/private/auth {
? ? group = postfix
? ? mode = 0660
? ? user = postfix
? }
? unix_listener auth-userdb {
? ? group = vmail
? ? mode = 0660
? ? user = vmail
? }
}
service imap-login {
? inet_listener imaps {
? ? ssl = yes
? }
}
ssl_ca = </etc/ssl/cacert.pem
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_dh_parameters_length = 2048
ssl_key = </etc/ssl/private/dovecot.pem
ssl_prefer_server_ciphers = yes
ssl_protocols = !SSLv2 !SSLv3 !TLSv1
ssl_require_crl = no
ssl_verify_client_cert = yes
userdb {
? args = /usr/local/etc/dovecot/users
? driver = passwd-file
}
verbose_ssl = yes




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Try adding auth_debug_password=yes

Aki


On 01.02.2018 10:27, yuryb wrote:
> We have FreeBSD-server with dovecot installed on it as IMAP-server. My
> user and password database is a text file with plaintext passwords.
> Clients connect to imap-server via TLS protocol and plaintext
> password. All works fine. But I want to configure ability to authorize
> with a client certificates. I have generated a client certificate and
> imported it to email-client. Also I have configured dovecot to verify
> client certificates. But email-client cannot authorize:?Password
> mismatch. Why dovecot reject my password in this case? Please help!
>
> My log:
> dovecot: imap-login: Valid certificate: /C=UA/ST=Kyiv/L=Kyiv/O=Contoso
> Ltd: user=<>, rip=10.1.1.59, lip=10.1.1.99, TLS handshaking,
> session=<fp5P5SBkhtMKAQE7>
> dovecot: imap-login: Valid certificate: /C=UA/ST=Kyiv/O=Contoso
> Ltd/OU=IT/CN=sysadmin/emailAddress=sysadmin at contoso.ua: user=<>,
> rip=10.1.1.59, lip=10.1.1.99, TLS handshaking,
session=<fp5P5SBkhtMKAQE7>
> dovecot: auth: passwd-file(sysadmin,10.1.1.59,<fp5P5SBkhtMKAQE7>):
> Password mismatch
> dovecot: imap-login: Disconnected (auth failed, 1 attempts in 6 secs):
> user=<sysadmin>, method=EXTERNAL, rip=10.1.1.59, lip=10.1.1.99, TLS,
> session=<fp5P5SBkhtMKAQE7>
>
> My configuration:
> # 2.2.24 (a82c823): /usr/local/etc/dovecot/dovecot.conf
> # OS: FreeBSD 10.2-RELEASE-p20 amd64? ufs
> auth_debug = yes
> auth_mechanisms = plain login external
> auth_ssl_require_client_cert = yes
> auth_ssl_username_from_cert = yes
> auth_username_format = %Ln
> auth_verbose = yes
> disable_plaintext_auth = no
> lda_mailbox_autocreate = yes
> mail_debug = yes
> mail_gid = 999
> mail_location = maildir:/mnt/mail/%n
> mail_uid = 999
> 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 = /usr/local/etc/dovecot/users
> ? driver = passwd-file
> }
> protocols = imap pop3
> service auth {
> ? unix_listener /var/spool/postfix/private/auth {
> ? ? group = postfix
> ? ? mode = 0660
> ? ? user = postfix
> ? }
> ? unix_listener auth-userdb {
> ? ? group = vmail
> ? ? mode = 0660
> ? ? user = vmail
> ? }
> }
> service imap-login {
> ? inet_listener imaps {
> ? ? ssl = yes
> ? }
> }
> ssl_ca = </etc/ssl/cacert.pem
> ssl_cert = </etc/ssl/certs/dovecot.pem
> ssl_dh_parameters_length = 2048
> ssl_key = </etc/ssl/private/dovecot.pem
> ssl_prefer_server_ciphers = yes
> ssl_protocols = !SSLv2 !SSLv3 !TLSv1
> ssl_require_crl = no
> ssl_verify_client_cert = yes
> userdb {
> ? args = /usr/local/etc/dovecot/users
> ? driver = passwd-file
> }
> verbose_ssl = yes
>
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I have added "auth_debug_password=yes" to "10-logging.conf"
and restarted dovecot.?But I do not see any information about the password in
the logs. Does this mean that the thunderbird does not send the
password??Although it asks for the password and I enter one.
New log:
dovecot: master: Warning: Killed with signal 15 (by pid=19769 uid=0 code=kill)
dovecot: master: Dovecot v2.2.24 (a82c823) starting up for imap, pop3
dovecot: imap-login: Valid certificate: /C=UA/ST=Kyiv/L=Kyiv/O=Contoso Ltd:
user=<>, rip=10.1.1.59, lip=10.1.1.99, TLS handshaking,
session=<pOTtkSNkxNoKAQE7>
dovecot: imap-login: Valid certificate: /C=UA/ST=Kyiv/O=Contoso
Ltd/OU=IT/CN=sysadmin/emailAddress=sysadmin at contoso.ua: user=<>,
rip=10.1.1.59, lip=10.1.1.99, TLS handshaking, session=<pOTtkSNkxNoKAQE7>
dovecot: auth: passwd-file(sysadmin,10.1.1.59,<pOTtkSNkxNoKAQE7>):
Password mismatch
dovecot: imap-login: Disconnected (auth failed, 1 attempts in 99 secs):
user=<sysadmin>, method=EXTERNAL, rip=10.1.1.59, lip=10.1.1.99, TLS,
session=<pOTtkSNkxNoKAQE7>


Try adding auth_debug_password=yes

Aki



On 01.02.2018 10:27, yuryb wrote:

We have FreeBSD-server with dovecot installed on it as IMAP-server. My user and
password database is a text file with plaintext passwords. Clients connect to
imap-server via TLS protocol and plaintext password. All works fine. But I want
to configure ability to authorize with a client certificates. I have generated a
client certificate and imported it to email-client. Also I have configured
dovecot to verify client certificates. But email-client cannot
authorize:?Password mismatch. Why dovecot reject my password in this case?
Please help!

My log: dovecot: imap-login: Valid certificate: /C=UA/ST=Kyiv/L=Kyiv/O=Contoso
Ltd: user=<>, rip=10.1.1.59, lip=10.1.1.99, TLS handshaking,
session=<fp5P5SBkhtMKAQE7>
dovecot: imap-login: Valid certificate: /C=UA/ST=Kyiv/O=Contoso
Ltd/OU=IT/CN=sysadmin/emailAddress=sysadmin at contoso.ua: user=<>,
rip=10.1.1.59, lip=10.1.1.99, TLS handshaking, session=<fp5P5SBkhtMKAQE7>
dovecot: auth: passwd-file(sysadmin,10.1.1.59,<fp5P5SBkhtMKAQE7>):
Password mismatch
dovecot: imap-login: Disconnected (auth failed, 1 attempts in 6 secs):
user=<sysadmin>, method=EXTERNAL, rip=10.1.1.59, lip=10.1.1.99, TLS,
session=<fp5P5SBkhtMKAQE7>


My configuration:
# 2.2.24 (a82c823): /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 10.2-RELEASE-p20 amd64? ufs
auth_debug = yes
auth_mechanisms = plain login external
auth_ssl_require_client_cert = yes
auth_ssl_username_from_cert = yes
auth_username_format = %Ln
auth_verbose = yes
disable_plaintext_auth = no
lda_mailbox_autocreate = yes
mail_debug = yes
mail_gid = 999
mail_location = maildir:/mnt/mail/%n
mail_uid = 999
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 = /usr/local/etc/dovecot/users
? driver = passwd-file
}
protocols = imap pop3
service auth {
? unix_listener /var/spool/postfix/private/auth {
? ? group = postfix
? ? mode = 0660
? ? user = postfix
? }
? unix_listener auth-userdb {
? ? group = vmail
? ? mode = 0660
? ? user = vmail
? }
}
service imap-login {
? inet_listener imaps {
? ? ssl = yes
? }
}
ssl_ca = </etc/ssl/cacert.pem
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_dh_parameters_length = 2048
ssl_key = </etc/ssl/private/dovecot.pem
ssl_prefer_server_ciphers = yes
ssl_protocols = !SSLv2 !SSLv3 !TLSv1
ssl_require_crl = no
ssl_verify_client_cert = yes
userdb {
? args = /usr/local/etc/dovecot/users
? driver = passwd-file
}
verbose_ssl = yes





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