On Fri, 19 Sep 2003, Stanier, Alan M wrote:
> DNS lookup of exchange5 (A) gave HOST_NOT_FOUND
> returning DNS_NOMATCH
> alan@??? cannot be resolved at this time:
> lookup of host "exchange5" failed in exchange router
> > ^C
>
> If I read this right, the system works out (correctly)
> that my mail should be sent on to exchange5, but the DNS
> lookup of that fails.
>
> However, there is an A-record for exchange5 ...
>
> [root@serlinux06 exim-4.20]# nslookup -sil
> > exchange5
> Server: 155.245.48.10
> Address: 155.245.48.10#53
>
> exchange5.essex.ac.uk canonical name = sernt4.essex.ac.uk.
Well, if I've read that right (I tend to use "dig" myself), it shows
there is a CNAME record for "exchange5.essex.ac.uk", which isn't the
same thing as an A record for "exchange5".
Run the test with full debugging, including the DNS resolver stuff, i.e.
with -d+resolver. That will show the DNS calls that are being made.
Have you set/changed the qualify_single option on the dnslookup router?
Are you testing on the same box as the running 4.05? If not, is the
resolver configuration the same? (Somebody reported something similar
between two different OS recently.)
> Can anyone suggest what I am doing wrong? Are there configuration
> options in 4.20 that mean my 4.05 configurtion file needs some
> editing?
I don't think so, at least, I can't recall any in this kind of area.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book: http://www.uit.co.uk/exim-book
