On 27 Aug, Ronald Klop wrote: > Mandatory? I'm googling, but can't find a document that declares it > mandatory and only sendmail seems to do it. > I think it is lame to use DNS info to rewrite e-mail addresses, but the > person who made it 'mandatory' will have good reasons for it. > > Does somebody have a pointer to the specs about this?
<http://www.rfc-editor.org/rfc/rfc1123.txt> 5.2.2 Canonicalization: RFC-821 Section 3.1 The domain names that a Sender-SMTP sends in MAIL and RCPT commands MUST have been "canonicalized," i.e., they must be fully-qualified principal names or domain literals, not nicknames or domain abbreviations. A canonicalized name either identifies a host directly or is an MX name; it cannot be a CNAME. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
