Re: [Exim] Invalid Sender: headers

On Fri, 2 May 2003 13:50:20 +0200 Andreas J Mueller <andy@???> wrote:

> Hi Phil!
>
> > Are others experiencing the same? I presume so.
>
> I have always had a condition in the DATA ACL that rejected
> unqualified recipients in the To: header, because a lot of spam that
> comes in has simply "To: You" or similar recipients. If a remote
> host really wants to use unqualified names, it's not my mail system
> that I consider broken.
>
> > My problem is that the rejection message is so uninformative
> > (Administrative prohibition) and I get the job of tracking the
> > problem in the rejectlog to see what the specific problem was. I
> > don't see how I can use message in the ACL to report the reason
> > because I can't tell whether it is the Sender:, Reply-To: or From:
> > header which has generated the failure.
>
> Set smtp_return_error_details in your configuration file, that should
> at least give some meaningful error message back to the sender. You
> may also want to set sender_unqualified_hosts to make Exim accept the
> unqualified addresses from a few broken, but otherwise accepted,
> hosts.
>

But the ChangeLog says that smtp_return_error_details says that is for address
verification callouts. This failure is not the result of a callout, but a syntax
check.

Phil.
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Phil Chambers (postmaster@???)
University of Exeter