[Dovecot] pam_authenticate() failed: authentication error

[Zbigniew Szalbot]

Hello,

I would like to ask for your help. I have noticed some error messages
issued by dovecot.

Mar 13 20:00:57 relay dovecot: auth-worker(default):
pam(example at example.com): pam_authenticate() failed: authentication error
(/etc/pam.d/dovecot missing?)

Not surprisingly
$ l /etc/pam.d/dovecot
ls: /etc/pam.d/dovecot: No such file or directory

The funny thing is that authentication does work but I guess I have
something misconfigured. I'd appreciate if you could help me.

I am on a FreeBSD system (7.0) if that matters.

Thank you!

-- 
Zbigniew Szalbot