Kenneth, Thanks. The problem is now intermittent for 8 popper accounts, except one. See below for details, but really I write you for this reason: Perhaps other similar posts have a similar cause as to my mysterious problem as well. Perhaps the FAQ should be modified to reflect that the local DNS may be configured properly, and the upstream DNS is bad??? That is, it may not be just a local DNS problem. This appears to be the case for me. The computer is not heavily loaded, has free RAM all the time. And few DNS config changes. None for the time period involved. Thus, it likely is not a local DNS problem, unless someone is attacking my computer. That would not effect a limited number of accounts. Must turn on the DNS logging I guess. It has worked fine for 2.5 years to date. I figure it is some upstream DNS provider is going wacky with config changes. Not sure why that would effect my DNS though. At 08:40 PM 3/23/2001 , Kenneth Porter wrote: >If the reverse-DNS works from another machine, then there's >some reason the DNS data can't get from there to your qpopper server. Agreed. I was hoping this rare type of failure, no changes to the system and the reverse lookup of 3 IPs stops working might be 'known' to the list readers. The problem went away March 23 at 21:19:07. That was a few hours after I posted to the list after 3 days of struggling to find out why these IP number would not reverse lookup. Other numbers in the same class C IP range would lookup. Hmm, looking at the log the reverse failed again starting March 26 at 11:26 for my 5 popper accounts. And on the same day at 21:47 started working again. And is still working now. Resolution is every 6 minutes the popper accounts are checked. The popper account 'kelly' continues to fail. The popper account 'david' continues to be intermittent but not at the same frequency as my 5 accounts. It is screwball. I only posted here as a last resort. >You could ask on the ISC bind-users mailing list. You are right that is where I searched first once I realized it was not truly a Qpopper problem, but it appears to not be related to my DNS either, as I tested that thoroughly. So I posted to this list in hopes... >Be sure to provide >real addresses and names so experts can check your DNS. The problem is my DNS is working fine. It appears to be a problem with an upstream provider somehow, though not my immediate ISP as I talked with them and tested their DNS too. It would not resolve the IP numbers either. They had made no changes. I had helped them set up their DNS along with the hired consulting guru. Asking someone to test so many upstream ISPs ... well I thought to first find out if this rare problem is known here at Qpopper. As the problem appeared by itself and left by itself, it makes me wonder how truly marvelous DNS is. >They skip >messages with obfuscated data. As you stated there are exploits to 2.53, and advertising them to a public mailing list is not in my best interest, especially to such an expert crowd. Thanks again Kenneth. Pete
