On Thu, 4 Jul 2002, Philip Hazel wrote:
> On Thu, 4 Jul 2002, Xander D Harkness wrote:
>
> > I have a rewrite rule in a host that sends mail to me.
> >
> > The rewrite rule is:
> >
> > root@??? root-wks@???
> >
> > The server it is trying to relay through does a callout to the adsl line
> > that wks.harkness.co.uk is connecting from (where all incoming ports are
> > firewalled), rather than trying to do a callout to the mx record that
> > would serve harkness.co.uk. It obviously fails and rejects the mail.
>
> The ACL is run before the address is rewritten by normal rewriting
> rules. Consequently, it is verifying root@???, not
> root-wks@???. I presume that wks.harkness.co.uk routes to
> that ADSL line.
>
> > Am I missing something or is it designed like this. How would I enable
> > an mx look up rather than sending host?
>
> You have a choice!
I'm confused - I was under the impression that exim would always use do
MX processing on the address it was verifying, and not specifically make
calls back to the sender-smtp (unless the MX processing directed it
there)
>
> 1. Use SMTP-time rewriting. That gets done as soon as the SMTP command
> is received, before the ACL is run. Add an S flag to your rule. If you
> want the same rule for headers, etc, add other flags as well, because S
> on its own suppresses the other flags.
>
> 2. Set up a router, with verify_only if necessary, that routes
> wks.harkness.co.uk appropriately.
>
>
> Hmm. Looking at the DNS, I find
>
> wks.harkness.co.uk. MX 10 relay1.harkness.co.uk.
>
> so maybe my assumptions above are wrong. What is supposed to happen is
> that the callout is done to the same host, and using the same interface,
> that a message sent to that address would use. What output do you get
> for
>
> exim -bvs root@???
>
> ? That should tell you how it routed it. (Add -d for debugging info.)
>
> --
> Philip Hazel University of Cambridge Computing Service,
> ph10@??? Cambridge, England. Phone: +44 1223 334714.
>
>
> --
>
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>
>
