CanNginx Mail Server replace Postfix to listen only?

[lkmcmillen]

Can the Nginx mail server be used in replacement of Postfix?

I am a bit new to this.  However, I have a small, fully functioning,
unmanaged VPS server, rented from Linode.com, which is setup as a LEMP
server, running Ubuntu 11.04, Nginx 1.0.2, MariaDB 5.2.6, PHP 5.3.6
(PHP-FPM), xcache 1.3.1, vBulletin 4.1.2, and Postfix which was setup
using the following script:

###########################################################
# Postfix
###########################################################

	# Installs postfix and configure to listen only on the local interface.
Also
	# allows for local mail delivery

	{
	echo "postfix postfix/main_mailer_type select Internet Site" |
debconf-set-selections
	echo "postfix postfix/mailname string localhost" |
debconf-set-selections
	echo "postfix postfix/destinations string localhost.localdomain,
localhost" | debconf-set-selections
	aptitude -y install postfix
	/usr/sbin/postconf -e "inet_interfaces = loopback-only"
	#/usr/sbin/postconf -e "local_transport = error:local delivery is
disabled"

	touch /tmp/restart-postfix
	}

############################################################

Can the Nginx mail server be used in the same manner in replacement of
Postfix?

If so:

(1) Is there good reason not to use the Nginx mail server in such a
manner?

(2) What do I need to do in order to use the Nginx mail server instead
of Postfix?

As a matter of information, I recently subscribed to Google Apps for the
hosted domain. We need Postfix, or the Nginx mail server, only to send
and receive email from our web applications.

Thank you.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,198821,198821#msg-198821