MailScanner / Postfix anomaly

Glenn Steen glenn.steen at
Tue Apr 17 23:26:48 IST 2012

I'd guess SElinux is to blame... Probably best to not let it enforce its
Den 16 apr 2012 22:14 skrev "Patrick Healy" <pjhealy at>:

> Hi,
> I just finished an CentOS 6.2 installation followed by Postfix and then
> MailScanner.  All seemed to be going well until I stopped MailScanner and
> then restarted it.  For whatever reason, Postfix refuses to start and kicks
> out the following error:
> fatal: unable to set session and process group ID: Operation not permitted
> However, when I start them individually (i.e. postfix start;
> check_MailScanner) both subsystems start and mail is processed.  Can anyone
> point me in a direction to start looking?  I'm trying to wean myself off of
> Sendmail, so I'm relatively new to Postfix.
> Thank you,
> Pat
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