Re:% sign appears with email address not solved

HiWhen i receive reply of my sent messages i see % sign with my email address in CC, bcc especially.

ex.

essa%XXXX@XXXX.com

where name of domain occurs two times. (XXXX)

I have checked and configured the messaging >configuration

(conversion tab) outbound option. But still it is the same.

Note: I have not created global domain document. Is it necessary to be created.

any help is high appreciated