- dovecot - dovecot.org

Forcing imap authentication failure for certain IP addresses
by Hippo Man 20 Jan '24

20 Jan '24

I'm running dovecot 2.3.18 under Debian 11. I want to do something that's a bit unusual: when IMAP connections are attempted from a few specific IP addresses, I want to force an IMAP authentication failure from those connections, no matter what user ID and password are specified. I know that I can use iptables to completely block imap access from those IP addresses to the IMAP ports. However, in these specific cases, I'd prefer that the connection goes through to dovecot, but for dovecot then to always generate authentication failures for those specific connections ... even if a valid user ID and password happen to be specified. Is there a way to do this in dovecot? Thank you very much in advance. -- hippoman(a)gmail.com Take a hippopotamus to lunch today. .---------, 0__0 / ( oo'---, / oo\ ,\ | | \ ,=__/ \ / / /------| /| |__|-' |__|'

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Documentation flaw: man-page link.
by Ralph Corderoy 19 Jan '24

19 Jan '24

Hi, https://doc.dovecot.org/admin_manual/doveadm_mailbox_commands/ ends with The man-pages also contain good descriptions of doveadm commands. Man-pages can be accessed online at e.g. https://wiki.dovecot.org/Tools/Doveadm That wiki page says Our primary documentation is now at https://doc.dovecot.org, please update your links. But I was at https://doc.dovecot.org to start with and there is no obvious mention of man pages there. This needs tidying up to avoid the loop and ideally provide man pages. -- Cheers, Ralph.

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post-login scripting
by Alex 19 Jan '24

19 Jan '24

Hi, I'm trying to determine the last login time for my IMAP users. Some systems use mbox while others are Maildir, but not sure that matters. I'd just like to touch a file similar to how it's done in this article, but it doesn't work for me. https://doc.dovecot.org/admin_manual/post_login_scripting/ I've followed the instructions explicitly - made the required changes to 10-master.conf and created a shell script in /usr/local/bin that touches a file in the user's home directory. However, the file doesn't get created/touched. I've enabled debugging and don't see any errors that might lead to what I'm doing wrong. It doesn't say explicitly in the article that the last-login script referenced in the article is actually the contents of the postlogin.sh script, but I'm assuming it is? When I put the following in my dovecot.conf instead of conf.d/10-auth.conf, it core dumps. I thought local changes should be made in dovecot.conf? service imap-login { executable = imap imap-postlogin inet_listener imap { port = 0 } inet_listener imaps { port = 993 } process_min_avail = 6 service_count = 0 vsz_limit = 512 M } service imap-postlogin { executable = script-login /usr/local/bin/postlogin.sh user = $default_internal_user } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 } } Hi, I'm trying to determine the last login time for my IMAP users. Some systems use mbox while others are Maildir, but not sure that matters. I'd just like to touch a file similar to how it's done in this article, but it doesn't work for me. https://doc.dovecot.org/admin_manual/post_login_scripting/ I've followed the instructions explicitly - made the required changes to 10- master.conf and created a shell script in /usr/local/bin that touches a file in the user's home directory. However, the file doesn't get created/touched. I've enabled debugging and don't see any errors that might lead to what I'm doing wrong. It doesn't say explicitly in the article that the last-login script referenced in the article is actually the contents of the postlogin.sh script, but I'm assuming it is? When I put the following in my dovecot.conf instead of conf.d/10-auth.conf, it core dumps. I thought local changes should be made in dovecot.conf? service imap-login { executable = imap imap-postlogin inet_listener imap { port = 0 } inet_listener imaps { port = 993 } process_min_avail = 6 service_count = 0 vsz_limit = 512 M } service imap-postlogin { executable = script-login /usr/local/bin/postlogin.sh user = $default_internal_user } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 } }

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Re: What is the difference between BEFORE, SENTBEFORE, and SAVEDBEFORE?
by Joseph Tam 18 Jan '24

18 Jan '24

From: Paul Pace <paul(a)mostlybsd.com> > BEFORE date specification > Matches messages with an internal date before date > specification. > > SENTBEFORE date specification > Matches messages with a Date: header before date specification. > > SAVEDBEFORE date specification > Matches messages, which were saved before date specification. > > I am creating a cron job to purge old messages in Trash or Spam folders, > but I discovered using doveadm search queries using savedbefore that > somehow no message in any of the folders shows up with queries starting > at 5d, even though there are much older messages. I don't know exactly the answer to your query, but the semantics of each term may not be the problem. I had this exact problem a decade ago with my own trash purging script. If you dump the above values e.g. doveadm fetch -ftab -A 'mailbox date.received' mailbox Trash BEFORE 90d you may find that many of them have the same value, and what's more, the time coincides with the first time you queried for that value (i.e. when you ran the above doveadm fetch). I think these fields may not have cached values before you ask for it, then it gets instantiated the current timestamp when you do. If you do a fetch every day, you'll eventually reach 90d, and it will work forever more (+/- 1 day). Perhaps adding those fields into these settings is a more direct and better solution: https://doc.dovecot.org/configuration_manual/mail_cache_settings/ Joseph Tam <jtam.home(a)gmail.com>

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What is the difference between BEFORE, SENTBEFORE, and SAVEDBEFORE?
by Paul Pace 18 Jan '24

18 Jan '24

In doveadm-search-query(7), it states: BEFORE date specification Matches messages with an internal date before date specification. SENTBEFORE date specification Matches messages with a Date: header before date specification. SAVEDBEFORE date specification Matches messages, which were saved before date specification. I am creating a cron job to purge old messages in Trash or Spam folders, but I discovered using doveadm search queries using savedbefore that somehow no message in any of the folders shows up with queries starting at 5d, even though there are much older messages. doveadm search mailbox Trash before 90d -A | wc -l 277 doveadm search mailbox Trash sentbefore 90d -A | wc -l 277 doveadm search mailbox Trash savedbefore 90d -A | wc -l 0 For my purpose, I'm not clear on the differences between the different queries and am wondering what will be the better option. Thank you, Paul

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testing sieve/pigeonhole, auth errors
by Joe Acquisto 18 Jan '24

18 Jan '24

A small SOHO system, of installed perhaps a year. Seems to be working and wished to add pigeonhole/sieve. Per Pigeonhole/sieve troubleshooting in the docs, set on mail_debug = yes and this is what I see, upon launching Thunderbird as the client. Thought that "unknown user" and "permission denied" deserved attention before any other steps. Just the dialog for one user is pasted below. pid 475 is dovecot,vmail for dovecot imapd This is what I see for /proc/self/io blah #ll /proc/self/io -r-------- 1 root root 0 Jan 15 15:10 /proc/self/io Jan 15 14:53:35 auth-worker(22903): Info: conn unix:auth-worker (pid=22897,uid=475): auth-worker<1>: pam(me(a)here.com,192.168.11.166,<RbZgXgEPUKbAqAum>): unknown user Jan 15 14:53:35 auth-worker(22901): Info: conn unix:auth-worker (pid=22897,uid=475): auth-worker<4>: passwd(me(a)here.com,192.168.11.166,<RbZgXgEPUKbAqAum>): unknown user Jan 15 14:53:35 imap-login: Info: Login: user=<me(a)here.com>, method=PLAIN, rip=192.168.11.166, lip=192.168.0.225, mpid=22907, session=<RbZgXgEPUKbAqAum> Jan 15 14:53:35 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: Effective uid=100, gid=1000, home=/home/vmail/me(a)here.com Jan 15 14:53:35 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: open(/proc/self/io) failed: Permission denied Jan 15 14:53:35 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Maildir Jan 15 14:53:35 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: maildir++: root=/home/vmail/me(a)here.com/Maildir, index=, indexpvt=, control=, inbox=/home/vmail/joea@j4com puters.com/Maildir, alt= Jan 15 14:53:35 auth-worker(22904): Info: conn unix:auth-worker (pid=22897,uid=475): auth-worker<1>: pam(me(a)here.com,192.168.11.166,<d7VgXgEPTqbAqAum>): unknown user Jan 15 14:53:35 auth-worker(22901): Info: conn unix:auth-worker (pid=22897,uid=475): auth-worker<5>: passwd(me(a)here.com,192.168.11.166,<d7VgXgEPTqbAqAum>): unknown user Jan 15 14:53:35 imap-login: Info: Login: user=<me(a)here.com>, method=PLAIN, rip=192.168.11.166, lip=192.168.0.225, mpid=22908, session=<d7VgXgEPTqbAqAum> Jan 15 14:53:35 imap(me(a)here.com)<22908><d7VgXgEPTqbAqAum>: Debug: Effective uid=100, gid=1000, home=/home/vmail/me(a)here.com Jan 15 14:53:35 imap(me(a)here.com)<22908><d7VgXgEPTqbAqAum>: Debug: open(/proc/self/io) failed: Permission denied Jan 15 14:53:35 imap(me(a)here.com)<22908><d7VgXgEPTqbAqAum>: Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Maildir Jan 15 14:53:35 imap(me(a)here.com)<22908><d7VgXgEPTqbAqAum>: Debug: maildir++: root=/home/vmail/me(a)here.com/Maildir, index=, indexpvt=, control=, inbox=/home/vmail/joea@j4com puters.com/Maildir, alt= Jan 15 14:53:36 imap(joea(a)acquisto-us.com)<22906><fwJdXgEPQKbAqAum>: Debug: Mailbox INBOX: Mailbox opened Jan 15 14:53:36 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: Mailbox INBOX: Mailbox opened Jan 15 14:53:37 imap(joea(a)acquisto-us.com)<22906><fwJdXgEPQKbAqAum>: Debug: Mailbox INBOX: UID 13710: Opened mail because: prefetch A small SOHO system, of installed perhaps a year. Seems to be working and wished to add pigeonhole/sieve. Per Pigeonhole/sieve troubleshooting in the docs, set on mail_debug = yes and this is what I see, upon launching Thunderbird as the client. Thought that "unknown user" and "permission denied" deserved attention before any other steps. Just the dialog for one user is pasted below. pid 475 is dovecot,vmail for dovecot imapd This is what I see for /proc/self/io blah # ll /proc/self/io -r-------- 1 root root 0 Jan 15 15:10 /proc/self/io Jan 15 14:53:35 auth-worker(22903): Info: conn unix:auth-worker (pid=22897,uid=475): auth-worker<1>: pam (me(a)here.com,192.168.11.166,<RbZgXgEPUKbAqAum>): unknown user Jan 15 14:53:35 auth-worker(22901): Info: conn unix:auth-worker (pid=22897,uid=475): auth-worker<4>: passwd (me(a)here.com,192.168.11.166,<RbZgXgEPUKbAqAum>): unknown user Jan 15 14:53:35 imap-login: Info: Login: user=<me(a)here.com>, method=PLAIN, rip=192.168.11.166, lip=192.168.0.225, mpid=22907, session=<RbZgXgEPUKbAqAum> Jan 15 14:53:35 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: Effective uid=100, gid=1000, home=/home/vmail/me(a)here.com Jan 15 14:53:35 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: open(/proc/ self/io) failed: Permission denied Jan 15 14:53:35 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Maildir Jan 15 14:53:35 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: maildir++: root=/home/vmail/me(a)here.com/Maildir, index=, indexpvt=, control=, inbox=/home/ vmail/joea@j4com puters.com/Maildir, alt= Jan 15 14:53:35 auth-worker(22904): Info: conn unix:auth-worker (pid=22897,uid=475): auth-worker<1>: pam (me(a)here.com,192.168.11.166,<d7VgXgEPTqbAqAum>): unknown user Jan 15 14:53:35 auth-worker(22901): Info: conn unix:auth-worker (pid=22897,uid=475): auth-worker<5>: passwd (me(a)here.com,192.168.11.166,<d7VgXgEPTqbAqAum>): unknown user Jan 15 14:53:35 imap-login: Info: Login: user=<me(a)here.com>, method=PLAIN, rip=192.168.11.166, lip=192.168.0.225, mpid=22908, session=<d7VgXgEPTqbAqAum> Jan 15 14:53:35 imap(me(a)here.com)<22908><d7VgXgEPTqbAqAum>: Debug: Effective uid=100, gid=1000, home=/home/vmail/me(a)here.com Jan 15 14:53:35 imap(me(a)here.com)<22908><d7VgXgEPTqbAqAum>: Debug: open(/proc/ self/io) failed: Permission denied Jan 15 14:53:35 imap(me(a)here.com)<22908><d7VgXgEPTqbAqAum>: Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Maildir Jan 15 14:53:35 imap(me(a)here.com)<22908><d7VgXgEPTqbAqAum>: Debug: maildir++: root=/home/vmail/me(a)here.com/Maildir, index=, indexpvt=, control=, inbox=/home/ vmail/joea@j4com puters.com/Maildir, alt= Jan 15 14:53:36 imap(joea(a)acquisto-us.com)<22906><fwJdXgEPQKbAqAum>: Debug: Mailbox INBOX: Mailbox opened Jan 15 14:53:36 imap(me(a)here.com)<22907><RbZgXgEPUKbAqAum>: Debug: Mailbox INBOX: Mailbox opened Jan 15 14:53:37 imap(joea(a)acquisto-us.com)<22906><fwJdXgEPQKbAqAum>: Debug: Mailbox INBOX: UID 13710: Opened mail because: prefetch

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Re: [EXT] Re: Dovecot imap-hibernate errors in 2.3.21
by Aki Tuomi 18 Jan '24

18 Jan '24

Can you send `doveconf -n`? I think it might be related to the separete user accounts somehow. Aki > On 18/01/2024 09:45 EET Lucas Rolff <lucas(a)lucasrolff.com> wrote: > > > SELinux runs in permissive mode on the system (so doesn't take action, and no violations are logged either), the OS specifically is Oracle Linux 8.9, the only main thing that differs from RHEL or eg rocky/almalinux is I use the newer oracle kernel they release, but shouldn't have any effect > > > The only "special" thing being that mail users are isolated on their own Linux user (a domain will result in a local Linux user being created), but that's about it. > There's nothing with eg virtualized file systems or anything like that, that would result in per user mount points as well > > > Sent from Outlook for iOS (https://aka.ms/o0ukef) > ------------------------------ > From: Aki Tuomi <aki.tuomi(a)open-xchange.com> > Sent: Thursday, January 18, 2024 8:37:07 AM > To: Lucas Rolff <lucas(a)lucasrolff.com>; dovecot(a)dovecot.org <dovecot(a)dovecot.org> > Subject: Re: Dovecot imap-hibernate errors in 2.3.21 > Did you check if maybe selinux is interfering here? I tested the 2.3.21-CE in a RHEL7 VM and hibernation seems to work there. > > Aki > > > On 17/01/2024 22:51 EET lucas(a)lucasrolff.com wrote: > > > > > > Thanks for your reply Aki! > > > > It doesn't seem to contain much more information sadly that points towards anything related to hibernate itself. > > "Debug: open(/proc/self/io) failed: Permission denied" being the main "thing" that seems a bit odd, but that also happens under 2.3.20 as well by the looks of it: > > > > ``` > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap-login: Login: user=<customer(a)example.com>, method=PLAIN, rip=193.36.xx.xx, lip=176.9.151.xxx, mpid=3631534, TLS, session=<JVYMV8gOq5vBJIOe> > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Loading modules from directory: /usr/lib64/dovecot > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Module loaded: /usr/lib64/dovecot/lib10_quota_plugin.so > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Module loaded: /usr/lib64/dovecot/lib11_imap_quota_plugin.so > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Module loaded: /usr/lib64/dovecot/lib20_fts_plugin.so > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Module loaded: /usr/lib64/dovecot/lib20_quota_clone_plugin.so > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Module loaded: /usr/lib64/dovecot/lib20_zlib_plugin.so > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Module loaded: /usr/lib64/dovecot/lib21_fts_solr_plugin.so > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Added userdb setting: mail=mdbox:~/mail/example.com/customer/ > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Added userdb setting: plugin/quota_rule=*:bytes=10240M > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Effective uid=1098, gid=1098, home=/home/username/ > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Quota root: name=User quota backend=count args= > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Quota rule: root=User quota mailbox=* bytes=10737418240 messages=0 > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Quota grace: root=User quota bytes=1073741824 (10%) > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: dict(proxy): dict created (uri=proxy::sqlquota, base_dir=/run/dovecot) > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: open(/proc/self/io) failed: Permission denied > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=mdbox:~/mail/example.com/customer/ > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: fs: root=/home/username//mail/example.com/customer, index=, indexpvt=, control=, inbox=, alt= > > Jan 17 20:42:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: quota: quota_over_flag check: quota_over_script unset - skipping > > Jan 17 20:42:17 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Mailbox INBOX: Mailbox opened > > Jan 17 20:42:17 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Mailbox INBOX: Mailbox opened > > Jan 17 20:42:49 de-mail01 dovecot[3631433]: imap-hibernate: Error: conn unix:imap-hibernate (pid=3631534,uid=1098): IMAP client fd not received > > Jan 17 20:42:49 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Error: Couldn't hibernate imap client: /run/dovecot/imap-hibernate disconnected > > Jan 17 20:43:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Mailbox INBOX: Mailbox opened > > Jan 17 20:43:49 de-mail01 dovecot[3631433]: imap-hibernate: Error: conn unix:imap-hibernate (pid=3631534,uid=1098): IMAP client fd not received > > Jan 17 20:43:49 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Error: Couldn't hibernate imap client: /run/dovecot/imap-hibernate disconnected > > Jan 17 20:44:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Mailbox INBOX: Mailbox opened > > Jan 17 20:44:49 de-mail01 dovecot[3631433]: imap-hibernate: Error: conn unix:imap-hibernate (pid=3631534,uid=1098): IMAP client fd not received > > Jan 17 20:44:49 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Error: Couldn't hibernate imap client: /run/dovecot/imap-hibernate disconnected > > Jan 17 20:45:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Mailbox INBOX: Mailbox opened > > Jan 17 20:45:49 de-mail01 dovecot[3631433]: imap-hibernate: Error: conn unix:imap-hibernate (pid=3631534,uid=1098): IMAP client fd not received > > Jan 17 20:45:49 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Error: Couldn't hibernate imap client: /run/dovecot/imap-hibernate disconnected > > Jan 17 20:46:16 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Debug: Mailbox INBOX: Mailbox opened > > Jan 17 20:46:49 de-mail01 dovecot[3631433]: imap-hibernate: Error: conn unix:imap-hibernate (pid=3631534,uid=1098): IMAP client fd not received > > Jan 17 20:46:49 de-mail01 dovecot[3631433]: imap(customer(a)example.com)<3631534><JVYMV8gOq5vBJIOe>: Error: Couldn't hibernate imap client: /run/dovecot/imap-hibernate disconnected > > ``` > > > > Best Regards, > > Lucas Rolff > > _______________________________________________ > > dovecot mailing list -- dovecot(a)dovecot.org > > To unsubscribe send an email to dovecot-leave(a)dovecot.org >

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Dovecot imap-hibernate errors in 2.3.21
by lucas＠lucasrolff.com 18 Jan '24

18 Jan '24

Hello, I recently upgraded a Dovecot install from 2.3.20 to 2.3.21 from the 2.3-latest repository ( http://repo.dovecot.org/ce-2.3-latest/rhel/$releasever/RPMS/$basearch ) However since then, I seem to be getting: Jan 13 01:08:32 mail01 dovecot[3646235]: imap-login: Login: user=<user(a)example.com>, method=PLAIN, rip=35.243.xxx.xxx, lip=176.9.xxx.xxx, mpid=3646265, TLS, session=<o9jJlMgOFzMj86dT> Jan 13 01:09:03 mail01 dovecot[3646235]: imap-hibernate: Error: conn unix:imap-hibernate (pid=3646265,uid=1010): IMAP client fd not received Jan 13 01:09:03 mail01 dovecot[3646235]: imap(user(a)example.com)<3646265><o9jJlMgOFzMj86dT>: Error: Couldn't hibernate imap client: /run/dovecot/imap-hibernate disconnected This seems to be the case for every email-account on the system. Related configs: 20-imap.conf: protocol imap { imap_hibernate_timeout = 30s imap_idle_notify_interval = 24 mins mail_plugins = $mail_plugins imap_quota quota_clone zlib fts fts_solr mail_max_userip_connections = 20 } 10-master.conf: service imap { # Most of the memory goes to mmap()ing files. You may need to increase this # limit if you have huge mailboxes. #vsz_limit = $default_vsz_limit unix_listener imap-master { user = $default_internal_user } extra_groups = $default_internal_group } service imap-hibernate { unix_listener imap-hibernate { mode = 0660 group = $default_internal_group } } 10-metrics.conf event_exporter log { format = json format_args = time-rfc3339 transport = log } metric hibernation_logging { exporter = log filter = event=imap_client_hibernated OR event=imap_client_unhibernated } socket: $ stat /run/dovecot/imap-hibernate File: /run/dovecot/imap-hibernate Size: 0 Blocks: 0 IO Block: 4096 socket Device: 19h/25d Inode: 48551407 Links: 1 Access: (0660/srw-rw----) Uid: ( 0/ root) Gid: ( 97/ dovecot) Context: system_u:object_r:dovecot_var_run_t:s0 Access: 2024-01-13 01:03:07.432084831 +0100 Modify: 2024-01-13 00:50:56.394662577 +0100 Change: 2024-01-13 00:50:56.394662577 +0100 Birth: - From the change log, I see the following: - imap-hibernate: If an IMAP client unhibernation timed out with "(version received)", the unhibernation could still have successfully finished later on and continued working normally. This was rather confusing, because imap-hibernate already logged that the client got disconnected. Avoid this by forcing the connection to shutdown on unhibernation timeout. By the looks of it, it seems hibernation never actually happens anymore as of the new version. Downgrading to version 2.3.20 again seems to make hibernation function again based on the event logs. In 2.3.21 I only see events being logged for `imap_client_hibernated` which matches the /run/dovecot/imap-hibernate disconnected: "error":"/run/dovecot/imap-hibernate disconnected" In 2.3.20 I get both imap_client_hibernated and imap_client_unhibernated events (that it happens and when idle_done is triggered). Thank you in advance!

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Re: Multiple user attributes in LDAP userdb query strings
by Oucheou Hassan 17 Jan '24

17 Jan '24

Merci Merci

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recipient delimiter option in dovecot
by André Rodier 17 Jan '24

17 Jan '24

Hello, all. Postfix allows me to configure multiple characters to be used as recipient delimiter. However, I don't see that in dovecot, it seems I can only use one character in recipient_delimiter ? Am I right ? Does dovecot would only let me use email+box(a)domain.com, or can I use other forms, for instance email~box(a)domain.com and email&box(a)domain.com ? Thanks. André -- 𝓐𝓡 - 𝐴𝑛𝑑𝑟𝑒 𝑅𝑜𝑑𝑖𝑒𝑟

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