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IP Address for MX record

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jwg...@homemail.com

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Apr 21, 2000, 3:00:00 AM4/21/00
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What is the IP address that I give to the ISP for our mail server? Is
it the address of the router they provided? If so, will I have to set
up a route to the mail server from the router? I can telnet to port
25 of the server from the local net. I cannot telnet to it from the
internet. They sent a zone file to me that has the mx record pointing
to an internal IP address. Any help??? Please???

1) DNS is provided by the ISP.
2) We have a Netopia 7100 router using NAT.
3) ISP uses a UNIX system.
4) Exchange 5.5
5) Outbound email works
6) Domain name: temosunrooms.com
7) Internal Domain: temo
8) Mail server name: temomail
9) Mail server IP: 192.9.200.4

Zone file:
[NS.NAMESERVERS.NET]
temosunrooms.com. SOA ns.nameservers.net
hostmaster.rapidsite.net. (2000041909 86400 3600 604800 345600)
temosunrooms.com. NS ns.nameservers.net
temosunrooms.com. NS ns2.nameservers.net
temosunrooms.com. NS ns3.nameservers.net
temosunrooms.com. A 209.238.84.191
temosunrooms.com. MX 10 temomail.temosunrooms.com
temomail A 192.9.200.4
ftp A 209.238.84.191
smtp A 209.238.84.191
www A 209.238.84.191
www MX 10 temomail.temosunrooms.com
temosunrooms.com. SOA ns.nameservers.net
hostmaster.rapidsite.net. (2000041909 86400 3600 604800 345600)

Rich Matheisen [MVP]

unread,
Apr 21, 2000, 3:00:00 AM4/21/00
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jwg...@homemail.com wrote:

>What is the IP address that I give to the ISP for our mail server? Is
>it the address of the router they provided? If so, will I have to set
>up a route to the mail server from the router? I can telnet to port
>25 of the server from the local net. I cannot telnet to it from the
>internet. They sent a zone file to me that has the mx record pointing
>to an internal IP address. Any help??? Please???
>
>1) DNS is provided by the ISP.
>2) We have a Netopia 7100 router using NAT.

You should be able to configure the NAT to map port 25 on
209.238.84.191 to 192.9.200.4. The MX record, however should point to
your only external IP address.

Maybe the ISP thinks you're going to run your own DNS behind the NAT?
In that case, the MX record is correct.

------------------
Rich Matheisen
MCSE+I, Exchange MVP
MS Exchange FAQ at http://www.swinc.com/resource/exch_faq.htm

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