TLS를 활성화한 후 포트 465를 노출해야 하나요?

지원 자체 호스팅
1

After we enable TLS do we need to also expose port 465 too? Looks like 25 is only exposed by default.

2

Mails are usually only received via Port 25, if transport-encrypted, then with STARTTLS. SMTPS (465) is deprecated.