:585
(TCP/UDP)
Reserved
Low RiskTCP/UDP — Email
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Port Overview
Port Number
585
Service Name
Reserved
Transport Protocol
TCP/UDP
Category
Email
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 585?
Port 585 was previously assigned to IMAP4+SSL but has been de-assigned. IMAP over TLS uses port 993 instead.
TCP/UDP
Email
Security Considerations
Port 585 (Reserved) 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.