This article applies to:
Question:
- Why is my email blocked by the filter? ii it a port block?
Reply:
The reason for the block is not the port but the SSL communication in the
packet. The filter tries to get a certificate on all destination domains. The
filter will block most SSL traffic when a certificate cannot be
matched ip/domain on the smtp ' Helo' to the destination server. We are working to make this
more flexible on certificate lookups.
Although
this can sometimes lead to overblocking, being port-agnostic is
actually one of the advantages of the Web Filter, in that it’s not just
looking at the
well-known HTTP ports. There’s nothing to prevent a web server from
listening on any port, but many web filtering solutions just monitor a
few specific ports. If the customer encounters issues in this area,
they can use the Range To Detect to make the necessary exclusions.
The range to detect is in Policy>Global Group>Range to detect.
add your Source ip and then go to source exclude and add your server ip's there.
Notes:
