Resolved! Possible Reason Why Palo Rejecting SMTP traffic containing attachments.
Hi All, I was . Over the past couple of days we have seen a increase in delayed or non delivered emails that contain attachments greater that approx. 3mb that are being rejected or non delivered to the mailbox transport server. It is now a permanent issue and we have identified that the firewall is the cause of the issue but I am unsure how to f...




