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I am trying to send SMTP with outbound tls encryption with
- Windows Server 2012 r2 IIS6
- Virtual SMTP Server
- tested with telnet smtp.mydomain.com 465 & 587 -> OK
- TLS certificate found with date (certifytheweb) -> OK
- Firewall set for both inbound and outbound (telnet OK from remote pc)
- But can't send with these ports (465,587)
My destination is to send Email with Encryption whatever the port is . Please may I know what would be my problem.
PS : sending without outbound tls works successfully over port 25. But 465 & 587 ports are not able to send even without outbound tls.