Any postfix people?

[Buddy Brannan]

Hi y'all,

Anyone use postfix?

If so, how can I do the following:
I need to have my outgoing Email show my Email address as
buddy at brannan.name instead of what it would show up as if I didn't do
anything with it. These kinds of things are handled by exim in
/etc/emailaddresses, in a format like this:
davros: buddy at brannan.name
melanie: melanie at some-isp.com

And so on...so...how is this accomplished with postfix? I can't seem
to find something similar?
-- 
Buddy Brannan, KB5ELV      | Alena Grace's proud papa!
Phone: (814) 455-7333      | Born: 04/06/2000 in Donetsk, Ukraine
Email: buddy at brannan.name  | Adopted: 10/07/2004 in Mariupol, Ukraine
http://buddy.brannan.name  |