[FW-1] strip attachments

[Dennis Koe <dkoe@FW1-NOSPAMSALESCENTRIX.COM>]

could someone please give me some detailed information/steps on how to strip
incoming email attachments based on extension? (ie. .exe, .scr)  i had tried
setting up a resource:

RESOURCE:
Sender: *
Recipient: *@mydomain.com
Strip Mime of type: *.exe *.scr

FIREWALL RULE:

Any --> SMTP server --> SMTP - filter -->  Allow


What ends up happening is that nothing is delivered at all to our internal
network.  all of the incoming mail gets rejected at the firewall.

Using Checkpoint Firewall-1 4.1sp4 on solaris 7

Any documentation or help would be appreciated.

Thanks,
dennis