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Originally Posted by Matth
One thing which can disrupt DNS, is excessive load from firewall reverse DNS lookups (my firewall is set NOT to R-DNS every damn ping!, but many are).
That can magnify the normal DNS load by a huge margin.
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Would this impinge on the network in general or my own PC ? The reason I ask is that I have a small problem that I suspect is DNS related.
My AV software, Command CSAV, from Authentium is set to auto update deffiles but I also receive instant notification via e-mail whenever new deffiles are posted, ( three or four times each day recently ). If I receive an e-mail notification I will always open my AV program to use the manual update even before auto update has kicked in. Sometimes manual update tells me that no new files are available, I put this down to DNS not yet updated and allow auto update to do its thing or try later. However over the past 2 days I have had several e-mail notifications but cannot update manually or automatically.
This morning as an experiment I disabled my Ntl BB and fired up my Zen dial up account and was instantly able to download deffiles that had been posted only a short time earlier.