dovecot - Mar 2019 - Maildir permissions issue with Postfix

Hi all,

We have a Postfix server that serves as an alias MTA to route to other mail
systems. I've recently installed Dovecot on it because we have three service
accounts that need simple POP3 mailboxes. I have the accounts set up on the
system and mail does get delivered to their ~/Maildir/ locations by Postfix,
however, every time a message is dropped in the Maildir for the user, the
permissions for the message are set to the user's uid:gid and Dovecot
can't access the mail message. Doing a chmod fixes it temporarily until the
next message drops.  The vmail group has access to the user's home folder
structure.

Any help is appreciated!!

Dovecot: 2.2.36

/etc/dovecot/dovecot.conf:

auth_debug = yes
disable_plaintext_auth = no
first_valid_uid = 1002
log_path = /var/log/dovecot.log
mail_debug = yes
mail_home = /srv/mail/%Lu
mail_location = maildir:~/Maildir
mbox_very_dirty_syncs = yes

namespace {
  inbox = yes
  location   prefix   separator = /
}
passdb {
  driver = pam
}
service auth-worker {
  user = root
}
userdb {
  args = blocking=no
  driver = passwd
  override_fields = uid=vmail gid=vmail
}

Thanks,
Randy
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> On 27 Mar 2019, at 17.03, Randall R. Sargent via dovecot <dovecot at
dovecot.org> wrote:
> 
> Hi all,
>  
> We have a Postfix server that serves as an alias MTA to route to other mail
systems. I?ve recently installed Dovecot on it because we have three service
accounts that need simple POP3 mailboxes. I have the accounts set up on the
system and mail does get delivered to their ~/Maildir/ locations by Postfix,
however, every time a message is dropped in the Maildir for the user, the
permissions for the message are set to the user?s uid:gid and Dovecot can?t
access the mail message. Doing a chmod fixes it temporarily until the next
message drops.  The vmail group has access to the user?s home folder structure.
>  
> Any help is appreciated!!
use dovecot-lda to deliver the emails. https://wiki.dovecot.org/LDA/Postfix

Sami

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