bounces to root

[Raphael Langerhorst]

Hi all,

I have an issue with "Undelivered Mail Returned to Sender" bounces to 
root at kolab.my.domain which have an empty sender field. These happen 
repeatedly (every 2-5 minutes) after a mail has been sent - sending works 
actually, the mail is received at the other end.

The setup currently looks like the following:
kolab is configured to send mail to the internet, but the MX record of the 
domain is still set to a different machine - so this might be an issue for 
"delivery reports" of the mail system in general(??).

Attached is the log. Do you know where these "bounces" come from? Any 
solution?

Thanks a lot!
-- 
Raphael Langerhorst
http://raphael.g-system.at/blog
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