sendmail, 4th Edition

Headers and mc Configuration

V8 sendmail offers a number of m4 macros for use in your mc configuration file that deal directly with headers. They are shown in Table 25-5.

Table 25-5. Header-related mc macros

Macro	§	Sets what
confFROM_HEADER	From: on page 1157	Define the format for the From: header.
confRECEIVED_HEADER	Received: on page 1162	Define the format for the Received: header.
confOLD_STYLE_HEADERS	OldStyleHeaders on page 1061	Declare the OldStyleHeaders option.
confMAX_HEADERS_LENGTH	MaxHeadersLength on page 1045	Declare the MaxHeadersLength option.
confMAX_MIME_HEADER_LENGTH	MaxMimeHeaderLength on page 1047	Declare the MaxMimeHeaderLength option.
confSINGLE_LINE_FROM_HEADER	SingleLineFromHeader on page 1092	Declare the SingleLineFromHeader option.
confUSE_ERRORS_TO	UseErrorsTo on page 1115	Declare the UseErrorsTo option, which affects the Errors-To: header.
confNO_RCPT_ACTION	NoRecipientAction on page 1060	Declare the NoRecipientAction option, which affects the To:, Cc:, and Bcc: headers.
confRRT_IMPLIES_DSN	RrtImpliesDsn on page 1083	Declare the RrtImpliesDsn option, which affects the Return-Receipt-To: header.