From: Adwait Tare (adwait_tare@xxxxxxxxx)
Date: Fri Mar 10 2000 - 01:38:28 GMT-3
This is a question not related to CCIE lab, but I know
there are a lots of experts on this forum and I can
get the answer.
We want to know about the DNS servers consideration
for the ISP. We are in the moiddle of designing a
nationwide ISP. In this design we are creating 6 POPs
at major big cities with multihoming each city to two
common tier one ISPs. For IBGP and OSPF area 0 we are
planning to use Frame Relay cloud. Now I have two
concerns,
i) Do we have to have one primary and one secondary
DNS at each location or one common primary DNS at HQ
and one secondary DNS at each other location is OK.
Can we use only one DNS (pri) and point at tier 1 ISP
for the secondary DNS.
ii) How do we address SMTP and POP3 mail servers. Can
we do with just one big server at one location and
store all mail boxes of customers at the same
locations OR it would be a good idea to have a
saperate POP3/SMTP server at each location. Can you
explain in brief how does the Mail servers and mail
service work.
Please advice.
Thanks in Advance.
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