Re: [Exim] Using a smarthost based on destination MX record

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Author: Kevin Reed
Date:  
To: exim-users
Subject: Re: [Exim] Using a smarthost based on destination MX record
Matthew Hodgson said:
> Hi,
>
> In order to get round certain big ISPs rejecting incoming mail from
> domestic IP ranges, I've been using a manualroute router with a domains
> precondition to route such mail via my ISP's smarthost.


Not only big ISP's do that ...

>
> However, I just realised that it makes much more sense to send such mail
> via the smarthost depending on the resolved MX record of the remote
> server for that domain rather than the @domain in the destination
> e-mail address.


Maybe I'm missing something but WHY?

You are not the one that is going to deliver to those sites so let the
smart host deal with which MX record is needed. If you hand off mail to
them they are going to do that anyway despite what you may have learned
about what MX records they have.

> Any comments would be greatly appreciated;


How do you know when some site is going to take your host and say it is
spam because it has cable in it?

Why don't you just smart everything and not worry about it?

--
Kevin W. Reed - TNET Services, Inc.
Unoffical Exim MTA Info Forums - http://exim.got-there.com/forums