Re: [Exim] Mail Forwarding problem

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Autor: Philip Hazel
Data:  
A: Russell Wilton
CC: exim-users
Assumpte: Re: [Exim] Mail Forwarding problem
On Wed, 18 Sep 2002, Russell Wilton wrote:

> >>A message that you sent could not be delivered to one or more of its
> >>recipients. This is a permanent error. The following address(es) failed:
> >>
> >> test.user@???
> >> SMTP error from remote mailer after RCPT TO:<test.user@???>:
> >> host polaris.netsrv.uleth.ca [142.66.ccc.ddd]:
> >> 550 unknown user


Is your Exim host the one that generates the bounce message, or is it
polaris.netsrv.uleth.ca?

> Maybe I didn't describe my problem adequately. Your answer would
> address the inverse of my problem.


Sorry, answering quickly sometimes has this kind of effect...

> 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
> understand that hide_child_in_errmsg is supposed to prevent the
> forwarding address from being displayed, but I don't have it set. So, I
> expected the bad forward address to be displayed in the bounce message,
> giving user "A" a chance of figuring out what's wrong. Instead, since
> they know "B"s address is valid, they think the mail system is broken
> and waste their and my time tracking down the problem.


... but it IS broken! (In some sense. :-)

> Why is the bad forwarding address not mentioned in the bounce?


> Do I
> have something configured incorrectly or do I need to create a
> customized bounce message? Thanks for your help.


A customized bounce message isn't going to help you, because the text of
the message is coming from a host that is remote to the one that creates
the bounce message. The bounce creator doesn't know anything about the
forwarding.



--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.