postfix address rewriting - regular expressions possible?

Hi,
I'm on the way replacing an old sendmail internal relay with a postfix
on suse 9.2
My tests hows it's working pretty well. But one problem left:
My old Groupwise mailserver is adding "postdomain." to all sender mail
addresses in special occasions.
<homer.s@mydomain> -> <postdomain.homer.s@mydomain.com>
At the moment I'm using a script running sed "s/<postdomain./>/g" to
get rid of that.
Is there any chance to include such reg expr. logic into postix's
address rewriting rules?

Regards,
Bernd

okay, got it ...
in canonical and virtual address mapping target to
regexp:/etc/postfix/canonical or /virtual
and use this regexp in the above files:
/^postdomain.(.*)@(.*)$/ $(1)@myDomain.com

Postfix is sooo coooool!

Thanks guys ...

On Tue, 14 Dec 2004 20:02:51 +0100, Bernd <motionseverywhere@gmx.net>
wrote:

>Hi,
>I'm on the way replacing an old sendmail internal relay with a postfix
>on suse 9.2
>My tests hows it's working pretty well. But one problem left:
>My old Groupwise mailserver is adding "postdomain." to all sender mail
>addresses in special occasions.
><homer.s@mydomain> -> <postdomain.homer.s@mydomain.com>
>At the moment I'm using a script running sed "s/<postdomain./>/g" to
>get rid of that.
>Is there any chance to include such reg expr. logic into postix's
>address rewriting rules?
>
>Regards,
> Bernd