Question : ASA 5510 - site to site vpn - receiving data but not sending

I've configured a bunch of site to site tunnels but I can't see where I went wrong here.  The client I am connecting to has an ASA as well and it is managed by another IT group.  The tech gave me the settings he used which were:

preshared key (what the key was)
IKE Policy Encryption / Authentication / DHGroup: 3DES / SHA / Group2
IPSec ESP Encryption / ESP Authentication: 3DES / SHA
their outside ip address
and we define the networks to be protected by the tunnel

So, I matched those settings and the tunnel came up.  And I can see that the RX traffic count is going up, but the TX is at 0.  What could cause this?  Thanks.

Mark

Answer : ASA 5510 - site to site vpn - receiving data but not sending

few things we have to check

nat exemption

crypto  ACL

route for the detination network

kindly check it and update