Dovecot lmtp doesn't log

[Stephan Bosch]

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 at 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
> }