* martin f. krafft: > also sprach Florian Weimer <[EMAIL PROTECTED]> [2007.10.10.1145 +0100]: >> RFC 1123 contains this requirement: >> >> 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. >> >> This means that it's fine to use domains pointing to CNAMEs in Internet >> mail. > > I think it says exactly the opposite, don't you?
There's a difference between Internet mail and SMTP. Internet mail addresses (which are passed to /usr/sbin/sendmail, for instance) must be canonicalized before they are used in SMTP. At least that's the theory; Exim doesn't do it. Is this still unclear? I don't really know how to explain this more clearly. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]