[81644] in North American Network Operators' Group
Re: Localized mail servers, global scope
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Wed Jun 22 12:41:31 2005
To: Tony Finch <dot@dotat.at>
Cc: Andrew Staples <andrews@ltinet.net>, nanog@merit.edu
In-Reply-To: Your message of "Wed, 22 Jun 2005 17:23:22 BST."
<Pine.LNX.4.60.0506221719030.21320@hermes-1.csi.cam.ac.uk>
From: Valdis.Kletnieks@vt.edu
Date: Wed, 22 Jun 2005 12:40:47 -0400
Errors-To: owner-nanog@merit.edu
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On Wed, 22 Jun 2005 17:23:22 BST, Tony Finch said:
> You need a table of name -> location mappings which each mail server can
> use to route email. You could distribute the table using whatever
> technology you like, e.g. LDAP. Google for Schlumberger Exim LDAP for a
> complicated example, though it can be done much more simply.
That's all fine and good once the mail gets into his e-mail infrastructure.
The problem he's going to hit is that he wants *my* mail server to send mail to
'fred@example.com' to get routed to the MX in San Fran where Fred is, and *my*
mail server to send mail 'johann@example.com' to get routed to the MX in Geneva
where Johann is, and avoid having a central MX that then does routing.
And basically, he's screwed, because the MX lookup is only based on the RHS
of the target address. AT *best* he can deploy a @NN.example.com and have
different MX entries for US.example.com and FR.example.com and so on (but he
already said that's a suboptimal).
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