Dovecot — Common Ports
Community software entries: links are references, not individual verification.
Role Unconfirmed (4)
POP3 (Post Office Protocol v3) fetches mail over TCP 110. After downloading, whether server copies are deleted depends on the client DELE command and server policy — unlike IMAP (143/993), which is designed to keep copies on the server. POP3 is plaintext; the TLS variant is POP3S on 995.
IMAPPOP3MailServer
IMAP on TCP 143 can upgrade a connection with STARTTLS when supported. It differs from implicit TLS on port 993.
IMAPPOP3MailServer
Port 993 provides IMAP mailbox access over implicit TLS. It is for reading and synchronizing mail, not SMTP submission.
SSL/TLSIMAPServer
TCP 995 is POP3S — POP3 wrapped in TLS from the first byte. It is the secure replacement for plaintext POP3 on 110 and the default in modern mail clients.
SSL/TLSPOP3Server
Scope
Port associations on this page are community-database references (common usage), not a live measurement of any machine; confirm with the official documentation before deployment.
Quick Info
- Categories
- Email & Messaging
- Associated ports
- 4
- Aliases
- —