Why is sendmail bad?

[Kenneth Porter]

--On Thursday, February 24, 2005 1:53 PM -0600 Josh Boyer 
<jwboyer at jdub.homelinux.org> wrote:

> But if a package is going to be the default for a distribution, it should
> also be fairly simple for new users to configure and adapt to.

What MTA configuration would a new user be expected to do? It sounds like 
the big one is enabling inbound scanning.

How "RPM-friendly" are Exim and Postfix to adding plug-ins? Can I just run 
the install RPM for the plug-in and these MTA's pick them up? Or is manual 
configuration necessary? (For comparison, most sendmail plug-ins currently 
require manual configuration, usually by copying some lines from the 
plug-in's readme to the sendmail.mc file. But a smarter plug-in could just 
provide an M4 file to include in sendmail's cf "feature" files and the user 
could just re-make the mc file to incorporate it.)