On Wed, 18 Sep 2002, Russell Wilton wrote:
> --
> [ Picked text/plain from multipart/alternative ]
> Philip Hazel wrote:
>
> >On Wed, 18 Sep 2002, Russell Wilton wrote:
> >
> >>When a local user "A" sends mail to another local user "B", and "B" has
> >>set an invalid forwarding address, "A" gets a bounce message saying that
> >>"B" doesn't exist, with no mention of the bad forwarding address.
> >>
> >
> >I guess I need to know more about the hosts involved. In the example
> >above, the control of the wording is with the polaris.netsrv.uleth.ca
> >host. If it's an Exim 4 host, the wording will be in the ACL.
> >
> I did some further experimenting and I think I figured out what is going
> on. The problem is due to the interaction of the default acl_check_rcpt
> section for local addresses:
>
> accept domains = +local_domain
> endpass
> message = unknown user
> verify = recipient
>
> and my simple forwarding router:
>
> userforward:
> driver = redirect
> data = ${FORWARD {$value} fail}
> check_ancestor
>
Or better yet, add no_verify to a dotforward router...
> The ACL specifies verifying the recipient, which is fine for local
> users, but if a user has set a forwarding address with an invalid
> domain, the verify pass fails and the sender gets a bounce message
> saying "unknown user" even though it's the forwarding address that is
> the problem, not the username.
>
> I should either change the message in the ACL to be "Unknown user OR
> Invalid forwarding address", or I should simply set "no_verfiy" on my
> userforward router, in which case the message will be accepted by the
> ACL and then bounced later when delivery to the invalid domain is
> attempted. I'm not sure which is the best approach. Do people normally
> set 'no_verify' on their forward router?
>
> Russ
>
> --
> Russell D. Wilton E Mail: WILTON@???
> Network Services Manager Voice: (403) 329-2525
> University of Lethbridge FAX: (403) 382-7108
> 4401 University Drive Lethbridge, Alberta, CANADA T1K 3M4
>
>
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>
>
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>
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