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

[Robert Schetterer]

Am 10.12.2013 11:25, schrieb 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!

perhaps check
the dsync target directory must be writable by vmail:vmail


Best Regards
MfG Robert Schetterer

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