Cisco 1751 and MS Exchange Server

[rajankumaresan]

Hi,

We hv a Central Location which has Cisco1751 with One Wic 1T and WIC 2A/S.Three 64K Leased Line to 3 branch offices.

Central Router 1751 IP is : 192.168.0.200/24

Serial 0/0 12.0.0.1/8

serial 0/1 14.0.0.1/8

serial 1 13.0.0.1/8

Branch NW : CIsco 1750 with Wic 2A/s

Serial ip. 12.0.0.2

Fast ethernet ip 192.168.3.100

We r having 2 ERP servers(192.168.0.1776/192.168.0.176) at Central place..All the branch users are accessing the same.But, we hv MS Exchange server at Central Location( 192.168.0.100).From the branch, users can able to ping the server but could not get the mails to be downloaded.But it works for the central LAN users.Do i need to change the Networks ip?.Do i need to assing a Single network for all the 3 branches?

advance thanks for ur help

[ssoberlik]

If you're using exchange mail, you might have netbios blocked or your your netbios names are not resolving properly. Can you ping the server by netbios name? If not, check to make sure you have WINS setup or a HOSTS file on the local machine resolving the netbios name. Netbios over TCP is routable so there should be no need to bring all networks on the same wire with bridging. It's better to keep them isolated. It could be a routing issue too, you could have a cisco tac rep look over your configs.