Performance

[Glenn Steen]

On 11/02/07, Drew Marshall <drew at technologytiger.net> wrote:
> On 11 Feb 2007, at 17:42, Glenn Steen wrote:
>
> > On 11/02/07, Koopmann, Jan-Peter <jan-peter at koopmann.eu> wrote:
> >> On Wednesday, January 31, 2007 3:21 PM John Schmerold wrote:
> >>
> >> > I'll get these suggestions implemented, only one I have problem
> >> > implementing is the relay_recipient_maps suggestions. This box is a
> >> > filter for several endpoints.
> >>
> >> If you are using Exim, why not use recipient callouts? That should
> >> work
> >> nicely and no scripting is necessary.
> >>
> >> Kind regards,
> >>  JP
> > The Postfix he is using should be able to do that too (in a way), but
> > ... well, it's more "work" than a nice local hash lookup:-).
>
> It's not more work to set up, it's just a reject_unverified_recipient
> in smtpd_recipient_restrictions. The disadvantages (Which is where
> the work load comes in) is the gateway to mailbox server traffic,
> which will increase and the fact it only will work with MTAs that
> know how to reject unknown senders (>Exchange 2000) and it won't work
> if the mailbox server that you are 'gatewaying' for is off line so in
> that instance all mail destined for that box will be rejected with a
> 421 unable to verify type message. All in all if you can keep a copy
> of the users on the gateway this is usually better (If harder work to
> maintain).
>
> Drew
Exactly.... Thanks for the eloquence Drew:).

Cheers
-- 
-- Glenn
email: glenn < dot > steen < at > gmail < dot > com
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