RE: [IMail Forum] Ports used by IMail.

[Len Conrad]

>How can you use DNS and not open port 53?

depends on whether you have specialized your DNS machines are not.  You can 
run a caching-only DNS for your inside ip�s that is not query-able from 
internet, so you can block 53 to that DNS.

but if a DNS is to be query-able, it needs 53 udp/tcp open.

Len


http://MenAndMice.com/DNS-training
http://BIND8NT.MEIway.com : ISC BIND 8.2.4 for NT4 & W2K
http://IMGate.MEIway.com  : Build free, hi-perf, anti-abuse mail gateways


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