Topic: DNS Confusion

[arkman]

The named set-up has changed from 4.01 to 4.1 and it is causing me some problems (I think). Can someone explain the db. files to me? There appear to be three different ones:

db.[domainname]
db.e-smith.[domainname]
db.myconpany.xxx

I'm wondering which ones control what (i.e. internal/external)?

The problem I'm having is that I'm not recieving any email from the outside world. I can send email out. I can connect via the web no problem. I can do an nslookup for the domain with no problem, but I cannot do a mx lookup for my domain externally. The nslookup -query=mx on the e-smith machine looks correct. Everything worked fine on my 4.01 machine.

Any ideas?

Thanks

[arkman]

Let me provide a little more information.

On my 4.01 machine I followed the instructions posted here: http://forums.contribs.org/index.php?topic=9682.msg36755#msg36755 to set-up a public dns server on my e-smith machine. I've now moved this machine (actually a test machine) forward to 4.1, and the public dns doesn't work correctly now. Or at least the email doesn't.

Noah

[arkman]

Ok. Getting closer. I'm now guessing that the problem has something to do with the packet filtering. Could this be the case?

[Gordon Rowell]

arkman wrote:
>
> Ok. Getting closer. I'm now guessing that the problem has
> something to do with the packet filtering. Could this be the
> case?

That, and more. We do not support or suggest running a "full" DNS server
on a e-smith box. This is a major customisation, and is better discussed
on the devinfo mailing list.

There are major security and reliability issues with running a "full" DNS
server - please ensure that you understand these fully before modifying
the configuration.

There are a large number of competent free or inexpensive DNS hosting
services available.

Gordon

[arkman]

Got it working. Thanks Gordon.