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Internet Mail Service

You can use the Internet Mail Service to exchange information with other messaging systems that use SMTP, as defined in RFC 821. The message format for Internet Mail is defined in RFC 822 and RFC 1521.

The Internet Mail Service adheres to the following RFCs:

RFC Description
821 SMTP, which is used to relay Internet mail
822 Defines an Internet message format for carrying a single plain-text body.
1521, 1522 Multipurpose Internet Mail Extensions (MIME). Extends RFC 822
to carry multiple body part, nontextual message bodies and textual information in multiple character sets in the same message.
1123 Internet Hosts Requirements
1566 Simple Network Management Protocol (SNMP)
1869 SMTP Service Extensions (ESMTP)
1870 Size Extension
1891 Delivery Status Notification (DSN)
1985 ETRN

The Internet Mail Service is a Windows NT Server service. You can configure the Internet Mail Service to send mail, receive mail, or do both.