> They are pointing their MX records to the machine by IP address,
> *not* by a hostname.
As in sending to a host with exactly four components, all of which happen to
be integers in the range 0 to 255 ?
Send them some polite email (using telnet to port 25) explaining that they
should use NAMES not ADDRESSES in MX RRs ...
> This is obviously not standard
Slight understatement -- it is plain ILLEGAL !
> (I have never seen anyone do this),
I have :-(((
> and Exim does not like it,
Nor should it !!
> and thus reports the hosts are non-existant.
Quite right -- as I remember, the non-existance of any such domains has been
discussed previously on this list ...
> What I am trying to do is change this behavior in Exim in general,i
NO !!! Do not do this ...
> not just by this specific host.
Get the actual problem fixed !!
> If one person did it, I am sure others are
I do not doubt that :-(
> and we just don't know about it yet.
Oh yes we do :-((
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