Exchange 2010 co-existence with Exchange 2007 issue NDR size Four Times then we send

Hi All,

I am facing some strange issues of NDR size four times then we send like if I send 1 MB message to internal OR external recipient then we receive 4 MB NDR.

Even we send one black mail with subject Test mail of 4 kb then we receive 16 kb NDR is it due to architecture change or something else.

Everything was fine with Exchange 2007 but facing this issues after we change the mail flow to Ex2010.

Any help really appreciated

Regards

Anand S

Thanks & Regards Anand Sunka MCSA+CCNA+MCTS