Hello, I am having a strange problem with resolving names to one specific internet domain. On occasion my DNS servers will lose the ability to resolve the t-systems.at domain. Clearing the cache re-enables the servers ability to resolve the t-systems.at domain. When I click on advanced view and look at the cache I see that the t-systems folder contains the following: (same as parent folder) - Name Server (NS) - ns1.t-systems.at. ns1 - Host(A) - 212.31.86.100 On the occasions when I cannot resolve the domain I have noticed that the cache record for t-systems.at is missing the A record. It only contains the NS record for ns1.t-systems.at. My best guess is that without this A record, the ns1.t-systems.at name server is unresolveable and clearing the cache forces my dns server to issue a query out to get the t-systems.at information. Thus name lookups fail until the cache is cleared and the t-systems folder is repopulated. Can anyone shed some light on why the cache might be missing this information. It prevents us from sending email to this domain. Thanks in advance, Chris
