The Post Office Protocol (POP) is one of the two most prevalent network protocols for e-mail retrieval, the other being IMAP. The POP protocol has been developed through several versions, with version 3 (POP3) being the current standard.

Testing Edit

To test a POP3 server you can communicate manually with it through telnet:

telnet 110

A sample POP3 session:

user johndoe
pass secret


Testing an encrypted connection:

openssl s_client -connect

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