Hi,

Thanks for replying.

initially logging was done via syslog, and the custom log file for mail.* facility was /var/log/maillog. Everything was logged normally (dovecot login logouts, sieve scripts, extra debugging lines) but nothing regarding LMTP. I would receive the email in my inbox but I wouldnt be able to see anything in the logs regarding this. After that i turned off syslog and used the direct dovecot logging to a separate file. Again, it was logging everything except of LMTP (mail debug is turned on).

Does anyone have a working configuration regarding this that they don't have a problem with LMTP logging? If yes could you please send me your config and dovecot version to compare.

Or if anyone has any other ideas.

Thank you.

On Thu, Nov 30, 2017 at 2:34 PM, Stephan Bosch s.bosch@ox.io wrote:

Op 25-11-2017 om 13:00 schreef Tomislav Perisic:

...

Does anyone have any idea regarding this?

On 17 Nov 2017 11:36, "Tomislav Perisic" tomiperisic@gmail.com wrote:

Hi,

We have 2 servers, server A and server B.

Server A has:

Postfix dovecot-2.2.33.2-1.el6.x86_64

Server B has:

dovecot-2.2.33.2-1.el6.x86_64 dovecot-pigeonhole-2.2.33.2-1.el6.x86_64

Server A receives email on postfix, dovecot then takes that email from postfix and proxies it to Server B Dovecot. Dovecot on Server B takes the proxied email and delivers it with lmtp to the user inboxes.

The problem is that the dovecot on server B Doesn't log anything regarding the emails that are being delivered to the mailbox via lmtp.

Dovecot on server A logs everything perfectly regarding the proxy, so my assumption is that there is an issue with Dovecot lmtp logging. We changed the logging from syslog directly to a file and we noticed the same problem, missing log entries.

We also tried turning on verbose logging and it didn't help.

Are you sure you're looking in the right place?

You can find out where logs are written using doveadm log find.

Especially with mail_debug enabled, you should see a lot of log messages for an LMTP delivery.

Regards,

Stephan.

...

Server B:

Red Hat 6.7 x86_64

rpm -qa | grep dove dovecot-2.2.33.2-1.el6.x86_64 dovecot-pigeonhole-2.2.33.2-1.el6.x86_64

doveconf -n

# 2.2.33.2: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.21 auth_cache_negative_ttl = 0 auth_debug = yes auth_debug_passwords = yes auth_verbose = yes listen = * mail_debug = yes mail_gid = mail mail_location = maildir:~/Maildir mail_plugins = " quota zlib" mail_uid = vmail managesieve_notify_capability = mailto

namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } mailbox Virus { auto = subscribe }

plugin { quota = maildir:User quota sieve_extensions = +editheader sieve_max_actions = 32 sieve_max_redirects = 4 sieve_max_script_size = 1M sieve_quota_max_scripts = 0 sieve_trace_debug = yes sieve_trace_level = matching sieve_vacation_dont_check_recipient = yes sieve_vacation_send_from_recipient = yes sieve_vacation_use_original_recipient = yes zlib_save = gz zlib_save_level = 6 } protocols = imap pop3 lmtp sieve service auth { unix_listener auth-userdb { group = mail mode = 0666 user = vmail } } service lmtp { inet_listener lmtp { port = xx } } service managesieve-login { inet_listener sieve { port = xx } service_count = 1 }

protocol lmtp { mail_plugins = " quota zlib sieve mail_log notify" } protocol imap { mail_plugins = " quota zlib imap_quota imap_zlib" } protocol sieve { managesieve_implementation_string = dovecot managesieve_logout_format = bytes ( in=%i : out=%o ) managesieve_max_line_length = 65536 managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave }

Op 1-12-2017 om 15:30 schreef Tomislav Perisic:

Hi,

Thanks for replying.

initially logging was done via syslog, and the custom log file for mail.* facility was /var/log/maillog. Everything was logged normally (dovecot login logouts, sieve scripts, extra debugging lines) but nothing regarding LMTP. I would receive the email in my inbox but I wouldnt be able to see anything in the logs regarding this. After that i turned off syslog and used the direct dovecot logging to a separate file. Again, it was logging everything except of LMTP (mail debug is turned on).

Does anyone have a working configuration regarding this that they don't have a problem with LMTP logging? If yes could you please send me your config and dovecot version to compare.

Or if anyone has any other ideas.

Are you sure Dovecot LMTP  is even being used? Your MTA may be delivering messages directly, without involving Dovecot. Check the MTA logs.

Regards,

Stephan.

Thank you.

On Thu, Nov 30, 2017 at 2:34 PM, Stephan Bosch mailto:s.bosch@ox.io> wrote:

Op 25-11-2017 om 13:00 schreef Tomislav Perisic:

    Does anyone have any idea regarding this?

    On 17 Nov 2017 11:36, "Tomislav Perisic"
    <tomiperisic@gmail.com <mailto:tomiperisic@gmail.com>> wrote:

    Hi,

    We have 2 servers, server A and server B.

    Server A has:

    Postfix
    dovecot-2.2.33.2-1.el6.x86_64

    Server B has:

    dovecot-2.2.33.2-1.el6.x86_64
    dovecot-pigeonhole-2.2.33.2-1.el6.x86_64

    Server A receives email on postfix, dovecot then takes that
    email from
    postfix and proxies it to Server B Dovecot. Dovecot on Server
    B takes the
    proxied email and delivers it with lmtp to the user inboxes.

    The problem is that the dovecot on server B Doesn't log
    anything regarding
    the emails that are being delivered to the mailbox via lmtp.

    Dovecot on server A logs everything perfectly regarding the
    proxy, so my
    assumption is that there is an issue with Dovecot lmtp
    logging. We changed
    the logging from syslog directly to a file and we noticed the
    same problem,
    missing log entries.

    We also tried turning on verbose logging and it didn't help.


Are you sure you're looking in the right place?

You can find out where logs are written using `doveadm log find`.

Especially with mail_debug enabled, you should see a lot of log
messages for an LMTP delivery.

Regards,

Stephan.



    Server B:

    Red Hat  6.7 x86_64

    rpm -qa | grep dove
    dovecot-2.2.33.2-1.el6.x86_64
    dovecot-pigeonhole-2.2.33.2-1.el6.x86_64

    doveconf -n

    # 2.2.33.2 <http://2.2.33.2>: /etc/dovecot/dovecot.conf
    # Pigeonhole version 0.4.21
    auth_cache_negative_ttl = 0
    auth_debug = yes
    auth_debug_passwords = yes
    auth_verbose = yes
    listen = *
    mail_debug = yes
    mail_gid = mail
    mail_location = maildir:~/Maildir
    mail_plugins = " quota zlib"
    mail_uid = vmail
    managesieve_notify_capability = mailto

    namespace inbox {
       inbox = yes
       location =
       mailbox Drafts {
         auto = subscribe
         special_use = \Drafts
       }
       mailbox Sent {
         auto = subscribe
         special_use = \Sent
       }
       mailbox Spam {
         auto = subscribe
         special_use = \Junk
       }
       mailbox Trash {
         auto = subscribe
         special_use = \Trash
       }
       mailbox Virus {
         auto = subscribe
       }

    plugin {
       quota = maildir:User quota
       sieve_extensions = +editheader
       sieve_max_actions = 32
       sieve_max_redirects = 4
       sieve_max_script_size = 1M
       sieve_quota_max_scripts = 0
       sieve_trace_debug = yes
       sieve_trace_level = matching
       sieve_vacation_dont_check_recipient = yes
       sieve_vacation_send_from_recipient = yes
       sieve_vacation_use_original_recipient = yes
       zlib_save = gz
       zlib_save_level = 6
    }
    protocols = imap pop3 lmtp sieve
    service auth {
       unix_listener auth-userdb {
         group = mail
         mode = 0666
         user = vmail
       }
    }
    service lmtp {
       inet_listener lmtp {
         port = xx
       }
    }
    service managesieve-login {
       inet_listener sieve {
         port = xx
       }
       service_count = 1
    }

    protocol lmtp {
       mail_plugins = " quota zlib sieve mail_log notify"
    }
    protocol imap {
       mail_plugins = " quota zlib imap_quota imap_zlib"
    }
    protocol sieve {
       managesieve_implementation_string = dovecot
       managesieve_logout_format = bytes ( in=%i : out=%o )
       managesieve_max_line_length = 65536
       managesieve_sieve_capability = fileinto reject envelope
    encoded-character
    vacation subaddress comparator-i;ascii-numeric relational
    regex imap4flags
    copy include variables body enotify environment mailbox date ihave
    }

Op 4-12-2017 om 11:08 schreef Tomislav Perisic:

Im sure because dovecot from server A takes the email from the MTA and proxies it to the dovecot on server B that doesnt have an MTA.

Right. Forgot about that part.

Regards,

Stephan.

On 4 Dec 2017 10:54, "Stephan Bosch" mailto:s.bosch@ox.io> wrote:

Op 1-12-2017 om 15:30 schreef Tomislav Perisic:

    Hi,

    Thanks for replying.

    initially logging was done via syslog, and the custom log file
    for mail.* facility was /var/log/maillog. Everything was
    logged normally (dovecot login logouts, sieve scripts, extra
    debugging lines) but nothing regarding LMTP. I would receive
    the email in my inbox but I wouldnt be able to see anything in
    the logs regarding this. After that i turned off syslog and
    used the direct dovecot logging to a separate file. Again, it
    was logging everything except of LMTP (mail debug is turned on).

    Does anyone have a working configuration regarding this that
    they don't have a problem with LMTP logging? If yes could you
    please send me your config and dovecot version to compare.

    Or if anyone has any other ideas.


Are you sure Dovecot LMTP  is even being used? Your MTA may be
delivering messages directly, without involving Dovecot. Check the
MTA logs.