:473
(TCP/UDP)
Hybrid-POP
Low RiskTCP/UDP — Email
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Port Overview
Port Number
473
Service Name
Hybrid-POP
Transport Protocol
TCP/UDP
Category
Email
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 473?
Hybrid POP. A hybrid Post Office Protocol variant combining POP and IMAP features.
TCP/UDP
Email
Security Considerations
Port 473 (Hybrid-POP) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.
Recommendation: Standard security practices apply. Keep software updated and monitor access.