How to allow a file extension

[Cloud9]

Im having trouble

A back fieldworker (*.zap) has a file in it thats triggering a block

This message has had one or more attachments removed (Siemens.Simatic.Lang.xml

And

MailScanner: No programs allowed (_aa_1.del)


I have added allow for the zap file

What other allow do I need to add to get this attachment to be ignored ?

[Cloud9]

back fieldworker = Siemens Archive project (not sure why my Mac auto correct changed this!)