Sender addres of Auto Response emails

[nicron]

Hi all!
We have set up a OTRS 3.0.6 installation witch works fine exept from one thing.
We are sending auto replys when a new ticket is created but when looking in the mailserver log files, the "from=" address is set to "from=<>" witch makes o lot of receiving mail servers to reject the message due to failed SPN. ( 550 #5.1.0 Rejected by bounce verification. (in reply to RCPT TO command))

Sending "normal" replies works just fine.

Can i set this "from" address anywhere or can i alter som file to allways set the "from=<>" value to a static address?

regards
/Max

[jojo]

ye in Core::Sendmail (Envelope From) in Sysconfig