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Running 2.3.0~alpha0-1~auto+1045, basically as a proxy between MUA and Exchange (IMAP): Sep 7 16:10:32 mproxy dovecot: imap-login: Login: user=<holtgrem>, method=PLAIN, rip=172.16.128.8, lip=141.42.206.11, mpid=61031, TLS, session=<fp3JBZpYop+sEIAI> Sep 7 16:10:32 mproxy dovecot: imap(holtgrem)<fp3JBZpYop+sEIAI>: imapc(exchange-imap.charite.de:993): Connected to

I'm using the auto builds (2:2.2.24-1~auto+3) for Ubuntu/Debian. The recent upgrade to 2.2.24 cause the follwoing error to appear: I can log in to a mailbox via dovecot I can delete emails Upon expunge, dovecot crashes: Apr 29 11:05:30 mproxy dovecot: imap(hildeb): expunge: box=INBOX, uid=142514, msgid=, size=10086 Apr 29 11:05:30 mproxy dovecot: imap(hildeb): expunge: box=INBOX,

* Ralf Hildebrandt <r at sys4.de>: > Mar 20 16:10:17 mproxy dovecot: master: Dovecot v2.2.devel (a39b5b2) starting up for imap > Mar 20 16:10:26 mproxy dovecot: auth: Error: imapc(exchange-imap.charite.de:993): Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) > Mar 20 16:10:26 mproxy dovecot: auth: Error:

I'm trying to adapt http://wiki2.dovecot.org/HowTo/ImapcProxy to our Exchange Server, which has LOGINDISABLED on Port 143, and I offering LOGIN on Port 993. How do I go about this? Simply changing imapc_port to: imapc_port = 993 doesnt work: Connected to localhost. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS

Hi! I upgraded the 2.2 packages today (from 2:2.2.28-1~auto+5 to 2:2.2.28-1~auto+8) I now I'm getting an error: Mar 20 13:25:58 mproxy dovecot: auth: Error: imapc(email.charite.de:993): Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) I checked, and alas, I had ssl_client_ca_dir = ssl_client_ca_file = So I set:

* Aki Tuomi <aki.tuomi at dovecot.fi>: > Could you send us the gdb bt full backtrace for the core file? Currently I can't get it to create coredumps doveconf -n: # 2.2.devel (3f97702): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.devel (023f391) # OS: Linux 4.4.0-65-generic x86_64 Ubuntu 16.04.2 LTS auth_mechanisms = plain login default_vsz_limit = 1 G imapc_host =

* Aki Tuomi <aki.tuomi at dovecot.fi>: > > > On 20.03.2017 14:30, Ralf Hildebrandt wrote: > > ssl_client_ca_file = </etc/ssl/certs/ca-certificates.crt > > Leave the < out. It is misleading, I know, but it does say file. =) Makes no difference: # doveconf |fgrep ssl_client_ca ssl_client_ca_dir = ssl_client_ca_file = /etc/ssl/certs/ca-certificates.crt and with

We're proxying IMAP to an Exchange server. One of my colleagues is getting this when trying to save a message as "Draft" OR as "Sent items": Aug 25 13:45:41 mproxy dovecot: imap(froemmel): Error: imapc(exchange-imap.charite.de:993): Command '7 APPEND "Entw&APw-rfe" (\Draft) {232572}' timed out, disconnecting Aug 25 13:45:41 mproxy dovecot:

On 23.03.2017 11:59, Ralf Hildebrandt wrote: > * Ralf Hildebrandt <r at sys4.de>: > >> Mar 20 16:10:17 mproxy dovecot: master: Dovecot v2.2.devel (a39b5b2) starting up for imap >> Mar 20 16:10:26 mproxy dovecot: auth: Error: imapc(exchange-imap.charite.de:993): Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_*

>From the log: Jul 11 13:12:42 mproxy dovecot: imap-login: Login: user=<hildeb>, method=PLAIN, rip=141.42.206.36, lip=141.42.206.11, mpid=27254, TLS, session=<TGwoO1o3id+NKs4k> Jul 11 13:12:44 mproxy dovecot: imap(hildeb)<TGwoO1o3id+NKs4k>: Panic: file imap-client.c: line 854 (client_check_command_hangs): assertion failed: ((io_loop_find_fd_conditions(current_ioloop,

We're encountering a crash when proxying to an Exchange server: Mar 30 10:40:47 mproxy dovecot: imap-login: Login: user=<xxxbxxx>, method=PLAIN, rip=10.39.76.71, lip=141.42.206.11, mpid=18556, TLS, session=<H98xGkAvfvMKJ0xH> Mar 30 10:40:49 mproxy dovecot: imap(xxxbxxx): Fatal: block_alloc(134217728): Out of memory Mar 30 10:40:49 mproxy dovecot: imap(xxxbxxx): Error: Raw

* Ralf Hildebrandt <dovecot at dovecot.org>: > * Aki Tuomi <aki.tuomi at dovecot.fi>: > > > Could you send us the gdb bt full backtrace for the core file? > > Currently I can't get it to create coredumps Got a coredump and backtrace: ============================= Mar 20 16:10:17 mproxy dovecot: master: Dovecot v2.2.devel (a39b5b2) starting up for imap Mar 20

On 20.03.2017 16:40, Ralf Hildebrandt wrote: > * Aki Tuomi <aki.tuomi at dovecot.fi>: >> >> On 20.03.2017 14:30, Ralf Hildebrandt wrote: >>> ssl_client_ca_file = </etc/ssl/certs/ca-certificates.crt >> Leave the < out. It is misleading, I know, but it does say file. =) > Makes no difference: > > # doveconf |fgrep ssl_client_ca >

We're using dovecot as a proxy between the user and an exchange server. All over a sudden we're getting: Aug 27 13:16:07 mproxy dovecot: imap(username): Fatal: master: service(imap): child 18376 killed with signal 6 (core dumps disabled) Aug 27 13:16:09 mproxy dovecot: imap(username): Error: imapc(email.charite.de:993): Command '12 UID FETCH 0 (BODY.PEEK[])' failed with BAD: 12

After upgrading from 2.2.28-1~auto+45 to 2.2.29-1~auto+25 I'm gettings this: May 31 16:44:31 mproxy dovecot: auth: Fatal: passdb imap: Cannot verify certificate without ssl_ca_dir or ssl_ca_file setting May 31 16:44:31 mproxy dovecot: master: Error: service(auth): command startup failed, throttling for 8 secs May 31 16:44:31 mproxy dovecot: imap-login: Disconnected: Auth process broken

> On June 1, 2017 at 1:42 PM Ralf Hildebrandt <Ralf.Hildebrandt at charite.de> wrote: > > > * Aki Tuomi <aki.tuomi at dovecot.fi>: > > > > > So I added > > > > ssl_ca_file = /etc/ssl/certs/ca-certificates.crt > > > > > > > > But alas: > > > > May 31 16:50:24 mproxy dovecot: config: Warning: Obsolete setting

Running Dovecot from the daily builds: 2:2.3.0~alpha0-1~auto+1287 in an proxy setup: auth_mechanisms = plain login default_vsz_limit = 1 G imapc_host = <redacted>.charite.de imapc_port = 993 imapc_ssl = imaps imapc_ssl_verify = no listen = *,:: mail_gid = imapproxy mail_home = /home/imapproxy/%u mail_location = imapc:~/imapc mail_plugins = mail_log notify mail_uid = imapproxy passdb {

> On May 31, 2017 at 6:10 PM Ralf Hildebrandt <Ralf.Hildebrandt at charite.de> wrote: > > > * Ralf Hildebrandt <Ralf.Hildebrandt at charite.de>: > > > So I added > > ssl_ca_file = /etc/ssl/certs/ca-certificates.crt > > > > But alas: > > May 31 16:50:24 mproxy dovecot: config: Warning: Obsolete setting in

* Aki Tuomi <aki.tuomi at dovecot.fi>: > I meant > > passdb { > driver = imap > args = ... ssl_ca_file=/path/to/ca > } That doesn't work: passdb { driver = imap # Change the line below to reflect the IP address of your Exchange Server. args = host=exchange-imap.charite.de port=993 ssl=imaps ssl_ca=</etc/ssl/certs/ca-certificates.crt ... or args =

100% reproducible. User is using alpine to write an email. Continue postponed composition (answering "No" won't erase it)? y -> [>Empty folder! No messages really postponed!<] Can't delete {mproxy.charite.de/ssl/novalidate-cert/user=theusername}postponed-msgs Setup: ====== http://wiki2.dovecot.org/HowTo/ImapcProxy coredump available for further inspection Full