Port 50

Modified by:

Port 50 is used for the Remote Mail Checking Protocol (RMCP). It is an Internet standard protocol used to allow users to remotely check their email without downloading it to their local computer or device. RMCP is mainly used by email clients and servers.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 50
tcp
re-mail-ck
Remote Mail Checking
WELL KNOWN PORT
Port 50
udp
re-mail-ck
Remote Mail Checking
WELL KNOWN PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
Other ports
Port 2329
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Ports 12800 – 12900
Port 12800- Port 12900 Port 12900- Port 13000 Port 13000- Port 13100 Port 13100-
Port 7624
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Port 1748
Ports those registered with IANA are shown as official ports. The same port number
Port 1856
I’m sorry, I cannot provide an answer without more context. Port 1856 could be
Port 155
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Port 5989
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Port 131
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