Belkin router behind SW TZ-170 cannot access network

I have:

1 SonicWall tz-170 using vpn to another location with an exchange server.  SonicWall is 192.168.2.1

1 Belkin N450 behind the sonicwall to connect clients wirelessly.  Belkin's local IP is 192.168.2.254 (and is using DHCP)

Problem:

When I physically connect to the Belkin I am able to see the network and connect to exchange with no problems.  If I connect wirelessly though, I can get to IPs on the network but cannot connect to the server for exchange or syncing.
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InformationOutputAsked:
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Brad BouchardConnect With a Mentor Information Systems Security OfficerCommented:
Make sure that it is also aware of your DNS servers then too.  Also, make sure your SonicWALL and the Belkin aren't handing out the same ranges.
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Brad BouchardInformation Systems Security OfficerCommented:
1 Belkin N450 behind the sonicwall to connect clients wirelessly.  Belkin's local IP is 192.168.2.254 (and is using DHCP)

If by this you mean serving DHCP then perhaps it isn't giving out DNS which could screw up your Exchange connectivity.
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Brad BouchardInformation Systems Security OfficerCommented:
Please clarify what using DHCP means... althought I assume it means giving out leases.
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InformationOutputAuthor Commented:
The SonicWall is a DHCP server, and so is the Belkin.  I have the Belkin giving out IPS too because if I don't, guests will not get an IP at all all the wireless.
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InformationOutputAuthor Commented:
Turns out the Belkin was using the DNS automatically given by the ISP.  I changed that and put our main server first which allowed me to resolve the issue.
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