Looking at our ACC tab, I see that SMTP traffic has a risk of 5. We only accept SMTP from our Symantec.cloud smart host. It is then decrypted coming into our firewall and scanned again. We do not decrypt outgoing SMTP, but we do have an anti-virus scanner on our exchange server that scans emails, and we only allow Outbound SMTP through our smarthost.
Is this risk rating of 5 a reflection of the content of our SMTP traffic or does SMTP in general just always get a 5?
Apps themselves have the risk rating, so SMTP has a risk of 5. If you go to the applipedia (https://applipedia.paloaltonetworks.com/) you can check out the apps and their associated risk level.
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