[Dovecot] Dovecot 1.2.x passwd and shadow auth w/ PAM

[Timo Sirainen]

On 11.5.2011, at 1.10, Steven King wrote:

> Turning on auth debugging
> 
> May 10 18:09:22 auth(default): Info: shadow(mjb,69.2.98.5): lookup
> May 10 18:09:22 auth(default): Info: shadow(mjb,69.2.98.5): unknown user
> 
> These messages suggest that the auth mechanisms can't find the user. Though the user clearly exists in both /etc/passwd and /etc/shadow.

getspnam() doesn't see the user existing. There are 3 possibilies that I can think of:

1) the user truely doesn't exist in there

2) the file can't be opened due to auth process being run without root privileges (default in v2.0) - dovecot -n output would show this

3) SELinux or similar preventing Dovecot from accessing /etc/shdadow