I have added extensions in the attachment filtering, wmv, wma, mpg, avi. and the attachments are still coming through. Besides enabling message filtering, what else do I need to do?

ANSWER:

If you have any DNAT rule for SMTP port to your internal mail server, you will need to disable this. You can not have DNAT for SMTP and SMTP proxy enable at the same
problem. DNAT will take precedence over SMTP proxy.


QUESTION:

I do not have a DNAT setting for SMTP and Spam Assassin is working as there are other emails blocked.


ANSWER:

When your email message is larger than 200Kbytes, the Routefinder will not perform any filtering.


QUESTION:

How do we get a max file size limit greater than 10MB?


ANSWER:

You can not increase the mail size on the Routefinder due to performance and a limited flash disk space issue in the routefinder. Most mail servers do not allow mail size to exceed more than 5MB to prevent DoS attacks.

Large files should be downloaded via a Web site or FTP site. It should not be sent via email.