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TCP/IP-channel-specific options: BANNER_ADDITION (string)

This SMTP/LMTP server option adds the specified string to the SMTP/LMTP banner line. If the length of this addition string plus the MTA's regular banner line string (as constructed normally by the MTA---see in particular the CUSTOM_VERSION_STRING TCP/IP-channel-specific option) would be more than 80 characters, then the additional text will be put on a continuation line as part of a multi-line banner response, rather than being included on the initial 220 line. If the vertical bar character or "pipe" character, |, is included in the BANNER_ADDITION string, it is interpreted as a request for a line break; the MTA's regular banner line will be output as the first line of a multi-line banner response, and then each vertical bar separated portion of the string (including the very first, even if it is "short"), will be output on its own, separate line.

See also: