RH: Mailserver ports

 

Default Ports: Server: Authentication: Port:
SMTP Server (Outgoing Messages) Non-Encrypted AUTH 25 (or 587)
Secure (TLS) StartTLS 587
Secure (SSL) SSL 465
IMAP Server (Incoming Messages) Non-Encrypted AUTH 143
Secure (TLS) StartTLS 143
Secure (SSL) SSL 993
POP3 Server (Incoming Messages) Non-Encrypted AUTH 110
Secure (SSL) SSL 995

 

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