auto-replies in UM has format errors

If a user sets up a auto-reply inside usermin the from address is not right.

Error is:
# cat /home/toptuning.ch/homes/info/autoreply.0.txt
Autoreply-Start: 1221516000
Autoreply-End: 1223330399
From: info.toptuning.ch@mcqueen.openstream.ch

Notice the from address which is entirely wrong and it throws a //dsn=5.6.0, stat=Data format error// and prevents the auto-reply to be sent.

It should be info@toptuning.ch

Status: 
Closed (fixed)