Lock Down Port 25
Question asked by Scott Forsythe - November 2, 2015 at 9:36 AM
Is there a way to configure SmarterMail so local accounts can only send / authenticate off the submission port, 587? We would like to prevent accounts from authenticating and sending off port 25.

I know one way would be to take the primary server out of DNS (remove MX record) and have messages pass through a gateway or gateways. We might do this at some point but we are not ready to take our primary server out of DNS.

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