ASA 5540 VPN issues

[Ced Caldwell]

Need to some help with this one bad.

Running ASA Version 8.4(1) on a ASA 5540

We have sites (X and Z) and VPN clients that reside in domain X can access resources (MS Exchange and Files) on the LAN with no issues. However, when VPN clients try to access resources (email and file shares) within domain Z they can not get connected to MS Exchange, and some LAN resources. 

I have noticed that I do not have a 'name-server' or 'dns domain-lookup' parameter in the config.  Only 'dns server-group DefaultDNS' and domain-name "oursite domain"

Could this cause these types of issues?

I will have to get a Change Request to even test..

Anyone seen this problem before?

Need help!

[mvsheik123]

Without knowing your infra setup and ASA configs, it is hard to tell where the issue is. General checks...

X, Y and Z are in different ip subnets/location?

Make sure the DNS servers that the VPN client use can resolve the 'Z' location servers.

Also, make sure that proper 'static' & route statements exists for accessing 'Z' location resources.

Thx

MS