// REFERENCE
Port 465 (SMTPS)
Protocol: TCP
Service: SMTPS
Low risk
Mail submission with implicit TLS: the connection is encrypted from the start. An alternative to 587 with STARTTLS. Use it so clients send mail encrypted.
Related tools
Work with this in:
Related
25
Port 25 (SMTP) 110
Port 110 (POP3) 143
Port 143 (IMAP) 587
Port 587 (SMTP submission) 993
Port 993 (IMAPS) 995
Port 995 (POP3S)
Port 25 (SMTP) 110
Port 110 (POP3) 143
Port 143 (IMAP) 587
Port 587 (SMTP submission) 993
Port 993 (IMAPS) 995
Port 995 (POP3S)
Assignments per the IANA port registry. Educational content.