ESMTP is a user configurable relay-only MTA with a sendmail-compatible syntax, based on libESMTP and supporting the AUTH and the StartTLS SMTP extensions.
See Extended Simple Mail Transfer Protocol (ESMTP).
Extended Simple Mail Transfer Protocol. Extensions to the Simple Mail Transfer Protocol, defined in RFC 1869, that allow for additional features.
Extended Simple Mail Transfer Protocol. Proposed extensions to SMTP for things like maximum message length and allowing content wider than 7 bits. Related to the MIME spec. Not yet widely used. The core of the spec is in RFC 1425 and more is in RFC 1426 and RFC 1427.
Extended SMTP*. Has some more features.
Directory System Agent; the name of a database that can be accessed by the LDAP or X.500 protocol.
Extended Simple Mail Transfer Protocol. See Simple Mail Transfer Protocol.
Enhances Simple Mail Transport Protocol - provides minor enhancements to the SMTP protocol.
a user configurable relay-only Mail Transfer Agent (MTA) with a sendmail-compatible syntax
Extended Simple Mail Transfer Protocol. An extension to SMTP that gives a framework for additional extensions. RFC 1869
Extended Simple Mail Transfer Protocol. SMTP extensions allow two mail systems to negotiate facilities beyond those of SMTP, both for management and for kinds of message content not provided for in SMTP.
Extended Simple Mail Transfer Protocol. Extended version of the Simple Mail Transfer Protocol (SMTP), which includes additional functionality such as delivery notification and session delivery. ESMTP is described in RFC 1869, SMTP Service Extensions.
(Extended Simple Mail Transfer Protocol) A protocol that provides extensions to SMTP for sending e-mail that supports graphics, audio, and video files, and text in various foreign languages. These extensions were first described in RFC 1869.