with fetchmail received mail is sent to "from:" emailaddress

[VolumeRegeling]

Hi,

I recently installed Suse 8.1 and ran into some problems with postfix
and fetchmail.

When I get my mail with fetchmail all the mail that should be
delivered locally is sent to the original sender of each mail. For
instance an email from b...@sjors.com should be delivered to
ja...@home.org but is actually sent to b...@sjors.com.

Any clues and hints to what can be the problem ??

Thanks very much,

With kind regards,
Thijs