> On 09/06/2025 11:13 EEST "Tóth Attila" via dovecot <dovecot@dovecot.org>
> wrote:
>
>
> 1. I have a disturbing uid/gid issue: up until dovecot-2.3, dovecot
> changed its uid/gid to the user it is delivering the mail for. I'm the
> first user on the system with uid 1000 and the users gid is 100. Therefore
> I kept first_valid_uid = 1000 and first_valid_gid = 100. Now that I've
> upgraded to dovecot-2.4, it immediately started to complain about unable
> to change uid/gid, because it tries to write in user's directory as
> mail:mail. Mail directories and files in it are accessible only by the
> owner, not even by the group. So even after lowering first_valid_uid/gid,
> the operation fails.
>
> Are there any configuration options to restore dovecot-2.3 behavior to
> change uid:gid to the actual user
>
> Jun 8 21:40:52 server dovecot: imap(user)<48978><1LgipBQ3LO1/AAAB>:
> Error: mkdir(/home/user/mail/.imap) failed: Permission denied
> (euid=8(mail) egid=12(mail) missing +x perm: /home/user/mail, dir owned by
> 1000:100 mode=0700)
> Jun 8 21:40:52 server dovecot: imap(user)<48978><1LgipBQ3LO1/AAAB>:
> Error: mkdir(/home/user/mail/.imap) failed: Permission denied
> (euid=8(mail) egid=12(mail) missing +x perm: /home/user/mail, dir owned by
> 1000:100 mode=0700)
>
> 2. I know, that mbox is deprecated as of dovecot-2.4 - or that it has been
> long superseded by more modern formats, but I have a setup for 20+ years
> (without any problems and less files) and before I would convert it to
> Maildir, I'd rather provide a transition period and keep using mbox for a
> little while.
>
> During dovecot-2.3 times this was my mail_location setting:
> mail_location = mbox:~/mail/:INBOX=/var/spool/mail/%u
> Mails get delivered into /var/spool/mail/user and when dovecot reads them,
> they get copied under /home/user/mail.
>
> Now for dovecot-2.4 I'm forced to came up with this:
> mail_driver = mbox
> mail_path = /home/%{user}/mail
> mail_inbox_path = /var/spool/mail/%{user}
> #mail_home
>
> Are there anyone else with a setup like this struggling with dovecot-2.4?
>
> Thanks:
> Dw.
> --
> dr Tóth Attila, Radiológus, 06-20-825-8057
> Attila Toth MD, Radiologist, +36-20-825-8057
Sounds like something is setting mail_uid / mail_gid (or these are returned by
your passdb/userdb) and they don't match your expectations.
Try `doveadm user` command to see if this is the case.
Aki
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