I'm not sure when it started but on a Mac if I'm using the Mail app or the Outlook app and try to add a Yahoo IMAP account the XG Firewall is not allowing it to connect using SSL 993 and I can't see why, it is the DPI engine that is responsible for this as if I go to "Rules and Policies" > "SSL/TLS inspection rules" > "SSL/TLS inspection settings" > "Advanced settings" and turn off "SSL/TLS engine" everything starts working fine, I cannot see any logs in the Log Viewer to suggest dropped packet data for any reason. I'm not using any mail scanning settings or anything complicated/specific, can anyone advise ?
the DPI engine does not work with mail ports, 465, 993, 587, 25. You need to use the mail proxy. MAC mail does work with CAs and mail proxy scanning.
What is the use of using the DPI engine if you…