[81648] in North American Network Operators' Group
Re: Localized mail servers, global scope
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Wed Jun 22 13:27:15 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 17:57:52 BST."
<Pine.LNX.4.60.0506221754290.15056@hermes-1.csi.cam.ac.uk>
From: Valdis.Kletnieks@vt.edu
Date: Wed, 22 Jun 2005 13:26:20 -0400
Errors-To: owner-nanog@merit.edu
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On Wed, 22 Jun 2005 17:57:52 BST, Tony Finch said:
> You don't need a central MX if each site MTA knows which users are at
> which sites. Incoming email may have to take an extra hop if it comes in
> to the wrong site, but that's a consequence of the specification that no
> implementation can fix.
Exactly. The problem is that Andrew already labeled that as "suboptimal":
> Doesn't solve the problem of an email
> being sent to the wrong mx server (all mailservers would need to be able to
> handle an email delivered to it even if the account isn't local...more
> centralization). This would solve some of the problems with one centralized
> server farm if there was a globally distributed network of core mail
> servers, but sacrifices autonomy.
He *might* be able to sell the various branch offices on a solution that uses
LDAP or similar (Andre Oppermann suggested qmail-ldap), where each branch
manages its section of the LDAP tree, and the only centralized part the offices
would have to trust HQ to do is possibly run a robust redirector to the various
LDAP servers.
Sorry Andrew - but that's probably the "best suboptimal" that you'll be able to
actually deploy within the context of SMTP....
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