postfix does not start

[=?koi8-r?Q?=22?=Igor Shmukler=?koi8-r?Q?=22=20?=]

Hello,
I built kolab following the instruction from QIM. Built went well and everything. All compopents seem to fine, but postfix would not start.
When I execute $/kolab/etc/rc.d/rc.postfix start, I get a message that mailer was started. However ps does not show it. And when I do the stop, I indeed get a none 0 exit code. I tried running $/kolab/etc/rc.d/rc.postfix check, but it does not see any problems.
Any ideas? Where are the logs?
Thank you.