[Gllug] [: qmail, dhcp, dns query]

[bradut at intelesuri.net]

> 
> What exactly was it looking up? There are some combinations of records 
> (e.g. MX -> CNAME) which are illegal but some nameservers tolerate. Also 
> some nameservers may baulk at long chains of CNAMEs, which are legal but 
> discouraged. Or if you don't know what it was looking up, where were you 
> trying to send mail to? If it was to this group I can't explain it as 
> linux.co.uk has 2 MXs both of which point to As which is totally correct 
> as would be expected.

I was sending test messages to myself on freeuk.com, hotmail.com

> The nameserver in the router is likely to be very simplistic. The ones 
> you have replaced it with are probably more sophisticated. So it is 
> possible that you have hit a combination which is either illegal but 
> tolerated by the nameservers you are now using, or too much for your 
> router's nameserver to cope with.
the namesevers on the router are exactly the same as in my
/etc/resolv.conf those provided by my isp, eclipse.net.uk That's why I
couldn't understand why there weren't picked up by qmail when it had the
router as its nameserver, from which to pick up the isp's nameservers...
anyway that's the way I imagine it to work...
> 
> IMO the best way is to run your own caching nameserver on your Linux 
> box, that way you are in control, you do not depend on your ISP's 
> nameservers working, you can debug your problems yourself and if it's 
> broken you can fix it.
> 
That would be great but I've got so much to learn... There are many areas which I need to cover, the next on my list being sorting out a disaster recovery procedure. 
> I might also question why you would want to discard Debian's default 
> Exim in favour of Qmail but that's a bit of a religious issue which is 
> probably best avoided:)
I could say very little on that, only that I got qmail to work in a way
that I didn't manage to in Exim..., but I am taking no sides in this
debate...;)

> 
> Regards, Ian (coming to you courtesey of Exim on Debian Woody, and its 
> own bind 9.2.1).
> 
Thank you, Bradut
> 
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