SMTP Commands

This section describes SMTP commands that are recognized by the z/VM SMTP implementation. These commands are used to interface with user agent mail facilities (such as the CMS NOTE and SENDFILE commands) as well as with other SMTP servers.

For more complete information about SMTP and the commands that can be used with this protocol, it is suggested that you review the following RFCs:
  • RFC 2821, Simple Mail Transfer Protocol
  • RFC 822, Standard for the Format of ARPA Internet Text Messages
  • RFC 1870, SMTP Service Extension for Message Size Declaration
  • RFC 1652, SMTP Service Extension for 8bit-MIME transport

These RFCs are the basis for modern naming specifications associated with the SMTP protocol.

Note: The SMTP commands SEND, SOML, SAML, and TURN are not supported by the z/VM SMTP implementation, so are not described here.