Re: [Exim] Redirection to MS Exchange from exim on Linux

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Author: Jeremy C. Reed
Date:  
To: Slava Voronin
CC: exim-users
Subject: Re: [Exim] Redirection to MS Exchange from exim on Linux
On Sat, 27 May 2000, Slava Voronin wrote:
> Should I still have the entry for MX record in DNS Database for both mail
> servers like this?
> xxx.com    MX preference = 10, mail exchanger = mail.xxx.com
> xxx.com    MX preference = 50, mail exchanger = mail2.xxx.com


Only do this if mail2 (your NT box) is properly setup to either 1) only
queue or 2) be prepared to send the users who don't exist back to the mail
(linux server). But if it only queues then it may become some
configuration issue to figure out how it will know when real mail is
coming to it to be delivered? (I don't know Exchange.) If you choose to
send the unknown users back to the Linux box, then what will keep it from
being a loop?

Since you want the mail to first go to the Linux (mail) server, then if
user doesn't exist then send to the NT (mail2) server, I'd suggest that
you do not use this mail2 as the backup MX machine.

> > > My setup is like this:
> > > All emails go to users on linux box with exim. But some users
> > > don't exist on linux, only on MS Exchange (NT box).


  Jeremy C. Reed
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