MAIL.DELIVERY_File_format

   The MAIL.DELIVERY file controls DELIVER and tells it how to
   handle each incoming message. A MAIL.DELIVERY file consists of
   a series of directives with one directive on each line of the
   file. Each directive specifies how a certain kind of message is
   to be handled. A particular directive may or may not apply to a
   given message. An attempt is made to apply every directive in the
   MAIL.DELIVERY file to each message, thus more than one directive
   may apply to (and more than one action may be the result of) a
   single message.

   Any line in the file which begins with a semicolon or an
   exclamation point is considered to be a comment and is ignored.

   A directive line consists of the following items in order from
   left to right:

1-pattern 2-pattern 3-pattern accept action 1-parameter 2-parameter

   Items must be delimited by one or more spaces or tabs. Quoted
   strings (use double quotes, not single quotes) are allowed as
   single items; the quotes are removed from the items as they
   are read. A double quote can be obtained by using two double
   quotes with no space between them. This form of quote handling is
   consistent with that of OpenVMS DCL.

   The 1-PARAMETER and 2-PARAMETER items are both optional and can
   be omitted if the action ACTION requires no parameters. The first
   five items are mandatory and must appear in every directive line.
 

Additional information available:

Directive_Applicability         Actions         Example