Email coding

Hello,

I have some server information showing up in my emails that are sent out that I want to remove. Its server information and I would like to know how to change what information shows in outgoing emails.

Right now this is what shows up in the heading of outgoing emails.

XXXXXXXX@altar11.supremepanel11.com; on behalf of; My Site [sales@photoshoptemplates.net]

(the X’s replace the username for my cpanel)

Thanks for any help that can be offered.

Jere