INTERNET-DRAFT Charles H. Lindsey Usenet Format Working Group University of Manchester April 2001
6.2. Sender The Sender header specifies the mailbox of the entity which actually sent this article, if that entity is different from that given in the From header or if more than one address appears in the From header. This header SHOULD NOT appear in an article unless the sender is different from the author. This header is appropriate for use by automatic article posters. The content syntax makes use of syntax defined in [MESSFOR]. Sender-content = mailbox[Previous Up Next]
See also previous draft (03): 6.2. Sender
See also previous draft (02): 6.2 Sender
See also previous draft (son-of-1036): 6_4__Sender
See also previous draft (rfc-1036): RFC1036_2_2_2__Sender