Autor: endre Data: A: exim-users@exim.org Assumpte: Re: [Exim] Problem with Exim + Mailman + DNS
On Tue, 8 Jan 2002, Stephane Leclerc wrote:
> When I send a mail to the host the host part is rewrited and I got unknown
> local-part.
You send using some other MTA than exim, don't you?
> I try to figure the problem and to solve it. For best management, I would
> like to use CNAME instead of A records.
You should use MX records instead of CNAME. Some (imho broken, others
say correct) MTAs rewrite the recipient host if it's a CNAME.
RFC 1123 and 2821 disagree at this point, 1123 forbids the use of CNAMEs
in email addresses, 2821 allows it. Since 2821 updates 1123 I consider
it authoritative.
