The POP3 Proxy only handles incoming emails. Outgoing emails go via your Firewall rules. The SMTP Proxy can be used for externally-hosted email for your proprietary domain, but not for Gmail, Yahoo, etc.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005
The POP3 Proxy only handles incoming emails. Outgoing emails go via your Firewall rules. The SMTP Proxy can be used for externally-hosted email for your proprietary domain, but not for Gmail, Yahoo, etc.
Cheers - Bob
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005