[Dovecot] Dsync error: Couldn't drop privileges: getgrnam

[Alan McGinlay - SICS]

On 2013-12-09 11:21, Alan McGinlay - SICS wrote:
> On 2013-12-08 22:08, Alan McGinlay - SICS wrote:
> Actually I do, /var/vmail (contains virtual domain mailboxes) is
> owned by vmail:vmail
> 
> On 2013-12-08 21:49, Timo Sirainen wrote:
> On 5.12.2013, at 22.18, Alan McGinlay - SICS <alanm at sics.se> wrote:
> 
> mail_privileged_group = vmail
> ..
> mail_location = maildir:~/Maildir
> ..
> dsync(alantestuser at whatever.com): Error: user 
> alantestuser at whatever.com: Couldn't drop privileges: getgrnam(vmail) 
> failed: No such file or directory (in mail_privileged_group setting)
> 
> You don’t have vmail group in your system? Either create it or remove
> this setting. Most likely you want to remove it, since this setting
> was meant only for mbox format, while you’re using maildir.
> 
> After much trial and error and following Timos advice, I managed to
> get a sync to at least start and it lists folders, then it starts
> spamming this:
> 
> dsync(alantestuser at whatever.com): Error:
> safe_mkstemp(/tmp/dovecot.doveadm.) failed: No such file or directory
> dsync(alantestuser at whatever.com): Error:
> safe_mkstemp(/tmp/dovecot.doveadm.) failed: No such file or directory
> dsync(alantestuser at whatever.com): Error:
> safe_mkstemp(/tmp/dovecot.doveadm.) failed: No such file or directory
> ...
> 
> /tmp/dovecot.doveadm. does indeed not exist but I can't find any
> reference to it online or in the docs,
> 
> Any ideas?
> 

Still not able to get anywhere with this :( It really feels like a 
permissions problem, either with the master user, the unix user i start 
the dsync with (root) or the user that dsync runs as (vmail). I tried 
looking at the code for safe_mkstemp but still couldn't work out the 
source of this problem. If anyone has an idea it would be great to hear 
it!