Postfix greylist.pl not working in version 2.3

[Dhawal Doshy]

Quoting Douglas Ward <binaryflow at gmail.com>:

> I have been running greylist.pl successfully in Postfix 2.2 for a few days
> now.  After upgrading to 2.3 I see the following errors in
> /var/log/mail/errors:
>
> Oct 28 09:00:21 mx postfix/spawn[15280]: fatal: unknown user name: nobody
>
> Is there a user list somewhere in postfix 2.3?  Am I missing a setup step?
> I know this is probably a question for the postfix list but since there has
> been so much postfix discussion on this list I thought I would give it a
> shot.  Thanks!

Are you running postfix in a chroot? if yes, then compare the passwd  
file in the chroot with /etc/passwd.

A 'postfix check' might provide a clue.

- dhawal