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Port 110 - Pop3
Authored by: krisbrowne42 on Feb 07, '03 11:05:53AM
The reason this works is that port 110 is the default port for Pop3. The commands described are the same ones Mail uses to download, delete, list, etc. your email. If you telnet to port 143 you'd have access to IMAP's internal commands, 21 for ftp, etc. The commands can usually be found in the RFC's posted about their protocols. This is an excellent way to learn how each protocol works internally. The full command set for Pop3 can be found here. Others that are fun to poke at: 143 - IMAP4 - RFC2060 80 - HTTP - RFC1945 25 - SMTP - RFC821

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