Software

Ask something
Discussion Locked

Outlook communications with Exchange

0 helpful
5 replies

by nathan

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.
We have recently gone through some growing pains with our exchange server and outlook client attaching to each other. The problem seems to be with DNS when we ping our exchange server on the inside it wants to deliver the address that is public accessible. If we delete the route table wait then it works fine, but after a reboot the system goes back the same way any suggestions.

5 replies

by jb007

Ipconfig /all give you part of the information you require.

Find out how resolution is occuring. Wins? DNS? ARP?... if its WINS then the entry in WINS maybe pointing to the wrong IP. If its DNS your record may be inaccurate for the Exchange server.

A tracert tells you the path that a machine would take to get to the server.

NSLOOKUP's will be able to tell you whether or not the client can see teh exchange server INTERNALLY.

If your seeing the external address from nslookup then change the exchange servers details to reflect the internal ip address.

It may be worthwhile to pinpoint your resolution type p/h/etc this gives you a clue as to what services are queried first in finding the way to a server or service.

Finally after your changes have been made telnet to the exchange server by name and ip address and test that its receiving connections on port 25.

hope this helps,

regards,

jb

by mebudman

This is a DNS issue. If you are using an internal DNS server you should not be using any external addresses. This slows down name resolution to a crawl. If you are hosting your own DNS server for your domain name, you should use two DNS servers, one internal that resolves internal addresses and one external for people trying to send you email to your MX record which would reflect the external addresses. Set the internal DNS server to use the external DNS server for all addresses external toyour internal lan. That way your internal network structure does not get listed out on the internet.

This discussion is closed to new replies.