I didn't tried sendmail but going by the pages of
Code:
http://www.qmailrocks.org/
it seems like qmail is the way to go
Well I would say its got a nice documentation for Fedora. give it a glance; see if it enchants you
moreover QMR is a wonderful mailing list for qmailusers.
PS: i am not aware of any documentations of sendmail,since never tried it- if they exist its great! go for them.