Is there a way to force internal and external users to use SMTP with SSL/TLS. More precisely, I don't want ASL SMTP proxy to accept unsecured connection request.
Found a solution which seems to work on ASL 5.00x : - Activate TLS Encryption an Authentication and do not set anything in "allowed networks" under ASL SMTP proxy settings - activate TLS Encryption and Authentication in your email client - always in your email client, use the same smtp host name (MX) as the one set under ASL proxy settings - in ASL packet filter rules add the rule "any->external address, SMTP, allow"
With this config, you seem to be able to use ASL as SMTP relay from anywhere if you use authentication+encryption Without authentication and encryption, no use of ASL proxy/relay seems possible (except maybe for local domain, I've not tested).
