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 From:  Jeffrey Goldberg <jeffrey at goldmark dot org>
 To:  Monowall Mailing List <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Re: [m0n0wall] Two Mail Servers with 2 Public IP's
 Date:  Thu, 24 Mar 2005 10:52:12 -0800 
On Mar 24, 2005, at 2:30 AM, Richard Parvass wrote:

> FYI, CNAMEs are prohibited in MX records, according to RFC1912 2.4, 
> and RFC2181 10.3.

Indeed.

I would recommend that each mail server, through the mail server 
software, be configured to route to the other domain specially.  Every 
MTA has a mechanism for dealing with exactly this.

-j