Search Again: Re: mail server cannot be found... From: Global Homes Webmaster Date: Friday, January 14, 2000 Time: 10:34:00 pm On 01/14/00 at 12:53, Higher Powered wrote: > ok- > All is well again... sort of. > > I needed to restart QDNS for some reason. Either that, or my isp is messing > with the reverse lookup or something at the exact time I'm doing this! It doesn't look like your ISP is doing _anything_ with your reverse zone. As Chris Buxton has pointed out, there's no delegation of your class C zone. Starting from the root servers, delegation information stops at the class B zone, which is delegated to sprintlink: Server: a.root-servers.net Address: 198.41.0.4 Authoritative answers can be found from: 1.208.IN-ADDR.ARPA nameserver = NS1-AUTH.SPRINTLINK.NET 1.208.IN-ADDR.ARPA nameserver = NS2-AUTH.SPRINTLINK.NET 1.208.IN-ADDR.ARPA nameserver = NS3-AUTH.SPRINTLINK.NET The sprintlink name servers don't have any records for your class C zone (125.1.208.IN-ADDR.ARPA). So, to the internet at large, there is no reverse DNS info for your addresses. > But my mail server, cannot do a lookup for 208.1.125.162 when I have tcp/ip > set to my dns. It's not just your mail server -- no one can do a reverse lookup for 208.1.125.162, because of the above. > Am I correct then in assuming the following: > > It is trying to do a reverse lookup and failing. > This is the problem with my isp, as they have my reverse records The problem is that they don't. Or if they do, no one knows that they do, because authority for the zone hasn't been delegated to them. > This is a much more important thing than I thought Yes. > this could be the problem behind all my mail problems It could certainly be a contributing factor, since some mail servers rely on reverse lookups for certain functions (like checking to see if a From: address is from a valid domain). > >>It kinda bugs me that major ISP's like that don't know how important > >>reverse records are, or simply wait to set up reverse records until > >>their customers start complaining. Amen Brother Buxton! Christopher Bort

Messages In This Thread: mail server cannot be found... by Higher Powered on Jan 13, 2000 at 11:22:00 pm Re: mail server cannot be found... by Global Homes Webmaster on Jan 14, 2000 at 1:23:00 am Re: mail server cannot be found... by Men & Mice Support on Jan 14, 2000 at 3:53:00 am Re: mail server cannot be found... by Higher Powered on Jan 14, 2000 at 8:53:00 pm Re: mail server cannot be found... by Global Homes Webmaster on Jan 14, 2000 at 10:34:00 pm