From PortWiki
| Name:
| Simple Mail Transfer Protocol (SMTP)
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| Purpose:
| Simple Mail Transfer Protocol (SMTP) is the standard for e-mail transmissions across the Internet.
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| Offical:
| Yes
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| Related TCP Ports:
| 110, 465
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| Related UDP Ports:
| None
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| Information:
| SMTP is a relatively simple, text-based protocol, in which one or more recipients of a message are specified (and in most cases verified to exist) along with the message text and possibly other encoded objects. The message is then transferred to a remote server using a procedure of queries and responses between the client and server.
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| More Information
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