Re: [EXIM] How to only use a smart host for "good" addresses…

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Author: Marc Haber
Date:  
To: exim-users
Subject: Re: [EXIM] How to only use a smart host for "good" addresses?
On Mon, 11 Jan 1999 14:57:08 +0000 (BST), you wrote:
>On Mon, 11 Jan 1999, Marc Haber wrote:
>> I'd be perfectly satisfied if verification would happen during the
>> queue run.
>
>That's not "verification" in the sense Exim uses it. "Verification" *is*
>checking the incoming addresses during the SMTP dialogue. Anything else
>that is routing or directing.


I see. /me pleads guilty to incorrenct terminology.

>Now, I think I understand what you are really trying to do. You don't
>want verification. What you want is to do an MX-etc. routing on an
>address, and if that fails, to fail the address. If it succeeds, you
>don't actually want to send to the hosts you have found, but instead
>send to the smart host.


Exactly. This all should happen during the queue run, not earlier.

>What you want is a way for the transport's host list to override the
>hosts looked up by lookuphost.


I think so. If it is not possible yet, I'd like to have that added as
a wishlist item.

>Have you considered using fallback_hosts
>as a compromise, incidentally? That would send to your smart host only
>if it couldn't immediately send to the MX host.


I am reluctant to do this for the following reason: My exim machines
are both connected to the Internet via a dialup ISDN line. As you
might know, connection charges for dialup lines are extremely high
over here in Germany. So you would want the line to be used at its
full capacity when it is up. This cannot be achived if you try to
deliver a mail message to some obscure remote host in west central
asia. So I'd like to drop off my mail as quickly as possible at the
smarthost to be able to drop the line as early as possible.

Greetings
Marc

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