You are right! It works now!

From: tss@iki.fi To: pelle2004@hotmail.com Date: Mon, 29 Aug 2011 06:20:54 +0300 CC: dovecot@dovecot.org Subject: Re: [Dovecot] Virtual user and post-login 2.0.13

On Sat, 2011-08-27 at 16:54 +0200, Pelle Svensson wrote:

...

dovecot-postlogin.sh (executed as root)

#!/bin/sh

date >>/home/fetchmail/script.log

kill -s 10 cat /home/fetchmail/.fetchmail.pid | head -n 1 >>/home/fetchmail/script.log

exit 0

exec "$@", not exit 0 as http://wiki2.dovecot.org/PostLoginScripting shows.