I dont know how to turn this behaviour off and in this organisations we need to be able to send large zip-files. I could disable both spam and virus filtering but that would bother the users who would get killed by junk...
Is there another way? And why is this behaviour considered important enough to override the important functionality of sending archives...
------------This is the Postfix program at host mail.sustainabilitysolutions.ca.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to <postmaster>
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The Postfix program
<firstname.lastname@example.org>: host mail.acamedia.org[18.104.22.168] said: 550 This
message contains a virus or other harmful content (Oversized.Zip) (in reply
to end of DATA command)