[imp] "on behalf of" question

[Willem van den Berge]

Hello,

I just managed to install and configure Horde/Imp/Turba/Kronolith.
Everything is working fine with one small cosmetic imperfection.

E-mail sent from Imp comes in as: 

	Nobody [nobody at altep.com]; on behalf of; Willem van den Berge
[wvandenberge at altep.com]

Though I realize this is technically correct, my web-server runs as nobody,
I would like for is to just leave the "nobody" part off.

Can I change the configuration somewhere to change this behavior?

Thank you,

	Willem