Dovecot/Pigeonhole Issue (UTC modtime instead of localtime)

[Christoph Gröver]

Thanks Stephan for your answer.
> 
> Hmm. Probably, the timezone configuration (i.e. the contents of TZ 
> timezone environment variable) somehow doesn't reach the final stages of 
> e-mail delivery.

Sorry, I just found out we had pigeonhole-0.4.3 running on the old server.
The sources of 0.2.5 were also lying around, but were not used anymore.

On the old and the new server there's no TZ or TIMEZONE variable.
Still the version 0.4.3 together with System V on Mandriva 2010.2 worked and
the systemd version on CentOS 7.1.x sets up the past (2h back) as the modtime

> 
> > I think I found out that the function sieve_file_storage_update_mtime()
> > is the cause of this problem.
> 
> No. That is for the storage of the Sieve scripts and not the delivered 
> e-mail. That part is handled by Dovecot lib-storage.

I see. Made some assumptions which were wrong.

> 
> I haven't tried this at my end yet, but - to make sure we have all the 
> information we may need - could you enlighten us a bit about your 
> configuration? So, what output is produced by `dovecot -n`? How is final 
> delivery performed (using LDA or LMTP)?

We are delivering mail via  Dovecot-LDA, which calls pigeonhole ...

This is the (relevant) part of 'doveconf -':

-------------------------------------
# 2.2.18: /srv/dovecot-2.2.18/etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.8 (0c4ae064f307+)
# OS: Linux 3.10.0-229.7.2.el7.x86_64 x86_64 CentOS Linux release 7.1.1503 (Core)
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = plain login cram-md5
auth_verbose = yes
auth_verbose_passwords = plain
base_dir = /var/run/dovecot-22/
debug_log_path = /var/log/dovecot/dovecot.debug
default_internal_user = someuser
default_login_user = someuser
disable_plaintext_auth = no
info_log_path = /var/log/dovecot/dovecot.log
log_path = /var/log/dovecot/dovecot.err
mail_location = maildir:~/Maildir:INBOX=~/Maildir
mail_plugins = acl
managesieve_notify_capability = mailto
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 index ihave duplicate
[...]
plugin {
  acl = vfile
  mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
  mail_log_fields = uid box msgid size
  sieve = /srv/mail/sieve/%n.sieve
  sieve_before = /srv/mail/sieve/spam-filter/%n.sieve
  sieve_dir = ~/sieve
  sieve_global_dir = /srv/mail/sieve/global/
  sieve_global_path = /srv/mail/sieve/default.sieve
}
protocols = imap sieve
service auth {
  unix_listener auth-userdb {
    group = vmail
    mode = 0600
    user = someuser
  }
}
service imap-login {
  inet_listener imap {
    port = 143
  }
  inet_listener imaps {
    port = 993
    ssl = yes
  }
  process_limit = 400
  process_min_avail = 2
}
service imap {
  executable = imap postlogin
  process_limit = 350
}
service postlogin {
  executable = script-login rawlog
  user = someuser
}
[..]
userdb {
  args = uid=someuser gid=vmail home=/srv/mail/someuser/%u
  driver = static
}
userdb {
  args = username_format=%n /etc/dovecot/users
  driver = passwd-file
}
protocol imap {
  mail_max_userip_connections = 30
  mail_plugins = acl imap_acl mail_log notify
}
protocol lda {
  info_log_path = /var/log/dovecot/deliver.log
  log_path = /var/log/dovecot/deliver.err
  mail_plugins = sieve
}

-------------------------------


I had a look at lib-storage of dovecot, which also has calls for utime in it.

Well, I yet fail to understand why this could be useful or necessary.
After I write the file it already has the correct modtime. Absolutely no need to
fiddle around with utime - IMHO.

If I create a file by just touching it like 'touch SOMEFILE' it has the
correct current localtime as modtime.
Why should I change this to two hours in the past?
I still can't see the reason for this behaviour. Perhaps some IMAP
requirement I don't know of?

Hope you can elighten me and/or help me.

Thank you for your time.

-- 
Christoph Gröver