drop default MTA for Fedora 15

[Michael Cronenworth]

Andrew Haley wrote:
> Not everything that runs on Fedora is a Fedora package: people run
> their own programs, too.  Some things, like the existence of /bin/ls
> or being able to send mail by piping the message to either /bin/mail
> or/usr/{sbin,lib}/sendmail are basic features of UNIX.

No one is going to stop you from using an MTA.

I, for one, *never* use /bin/mail or /usr/bin/sendmail. I guess you 
could call me a "young whipper snapper" though.