MSDTC Problem

Hi all,

I have set up two server and also created linked server between server1 to server2

I could select from there just fine but when i try to run tirgger on table server1 which updates in server2 it gives me error following:
OLE DB provider "SQLNCLI" for linked server "Server2" return message "No Transaction is active"
MSG 7391, level 16, state 2, Procedure servertrigger, line 34
the operation could not be performed because OLE DB provider "SQLNCLI" for linked sever "SErver2" was unbale to begin a distributed transaction.

I have configured on both server exactly same:
with all the option:
MSDTC > Security Configuration:
Network DTC Access > TRUE
Allow Remote Clients > TRUE
Allow Remote Administration > TRUE
Allow Inbound > TRUE
Allow Outbound > TRUE
Mutual Authentication Required > TRUE
Enable Transaction Internet Protocol (TIP) Transactions > TRUE
Enable XA Transactions > TRUE
Account: NT AuthorityNetworkService
on both server..

On server2 i tried remote proc trans to on and off but it did not help.

What am i missing please Help!!!!!!!