Sendmail Enabler for Mac OS X
gulker writes "It's really nice to be able to use sendmail as a SMTP server on a PowerBook if you move around a lot. But enabling sendmail on OS X is non-trivial, and while a good tutorial exists, the stock Mac OS X 10.2 package is missing the m4 macro processor needed to regenerate sendmail.cf. So it was great news to hear about Bernard Teo's Sendmail Enabler, a cool Aqua-GUI-interface sendmail 'configurator' for Mac OS X."
Excuse me for my unformatted answer.