I'm a bit embarrased to ask question re: software several years old but it's worked and there's been no compelling reason to upgrade PDS/BDS of our domain. I don't know exactly when DNS lookups started failing, and it's with only with microsoft websites. It's ironic that a microsoft software fails with lookup of its own websites. I've gone thru all the FAQ's of expert-exchange and some suggest it's a PIX firewall issue with EDNS0, so I've already changed firewall's setting "fixup protocol dns maximum-length 4096" but alas the DNS still fails to lookup any microsoft websites. Keep in mind this DNS works find with all other major sites, ie google.com, yahoo.com, ibm.com, cnn.com or whatever, BUT it fails with www.microsoft.com
or any microsoft website returning messages "DNS request timed out. timeout was 2 seconds. *** ... can't find www.microsoft.com
: Non-existent domain".
I even rebuilt fresh NT test system and still problem persists with lookup failure of microsoft websites, so I installed BIND9 on test system and it has no problem with lookup of microsoft websites. So how to fix problem with original DNS.exe for Windows NT 4.0 server??
thank you in advance for your consideration,