On Fri, 2005-06-10 at 10:34 -0300, Everton da Silva Marques wrote:
> On Fri, Jun 10, 2005 at 02:12:25PM +0100, John Horne wrote:
> >
> > In trying it out on one of our mailhubs I have already hit a problem
> > with 2 sites. I'm not sure but it seems that MS Windows servers uses
> > the, for example, '_tcp.plym.ac.uk' domain in dealing with ADS/accounts
> > (maybe?). Access to the domain may well be restricted only to local
> > users, i.e. no dns lookups allowed. As such check_srv gets a dns server
> > failure and sends a 4xx code back (as far as I can tell). This seems to
> > be the problem with the 2 sites we have, and I'm just wondering if using
> > check_srv is worth the hassle (to put it bluntly!)?
>
> Are you using 'srv_fail_domains'? For example:
>
> dnslookup:
> driver = dnslookup
> domains = ! +local_domains
> transport = remote_smtp
> ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
> check_srv = smtp
> srv_fail_domains = *
> mx_fail_domains = *
> no_more
>
Hello,
No I am not using that option. I did see it, and read section 17.1 about
DNS lookup failures. However, to me it seems that if MS is already using
the '_tcp' domain for something else, and that it is most likely going
to be secured against external dns lookups, then check_srv will hit a
lot of sites with this problem. Using 'srv_fail_domains' will get around
the problem, but should probably be set to '*' by default?
John.
--
---------------------------------------------------------------
John Horne, University of Plymouth, UK Tel: +44 (0)1752 233914
E-mail: John.Horne@??? Fax: +44 (0)1752 233839
