I receive other mails on the same server. The text is never there. I also checked the message in the inbox of the email setup for posting, the text was not there. So, the text reaches passes through my host and reaches the inbox without the additional text. It is when the email is being retrieved by wordpress that NOD32 is adding the text. To make sure I also talked with my host. They said it is from the client which in this case is wordpress.
The response form the host:
This text is being added by the email client that is receiving the email and not our server.