[CentOS] Exim VS Postfix (no flame wars please)

On Tuesday, March 09, 2010 11:03 PM, david at pnyet.web.id wrote:
> Yahoo using postfix, and zimbra also use postfix as MTA. But exim is simple to configure.

And when did Yahoo switch from qmail to postfix? In fact, the headers 
still indicate that Yahoo is using their own modified version of qmail.