is this a serious condition?

[Raymond Dijkxhoorn]

Hi!

> No I've installed a caching only DNS on my mailgateway.
> Understood that that measure was sufficient.

>   How can you rule out DNS? You have *ALL* RBLs that you are using as local
>   zonefiles? Please search the FAQ/MAQ, SA timeouts are hard to catch...

This is not even close to ruling out a factor like that. If you have slow
resonses on the raget servers you are still getting delays. A caching DNS
will help, but nothing more then that. It wont rule out 'its not DNS'.

If a target RBL server gets DDoSsed you still get slow (or none) response,
so its giving timeouts.

Bye,
Raymond.

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