Best way to shutdown postfix prior to servicing hardware

2 msg	Postfix SASL Help
6 msg	Slowing down postfix
2 msg	need help deciphering a line
4 msg	Postfix SMTP server: errors from something.net[...
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9 msg	Postfix not following my access file.
3 msg	postfix logs delay, delays, dsn

Best way to shutdown postfix prior to servicing...
\ D G Teed (22 Jan 2008)
. \ Victor Duchovni (22 Jan 2008)
. \ mouss (23 Jan 2008)

1 msg	the bounce process hangs a mail (?)
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2 msg	Domain in username
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3 msg	transport_maps how to match mx's
2 msg	Where/when to insert a missing Message-ID

Subject:	Best way to shutdown postfix prior to servicing hardware
Group:	Postfix-users
From:	D G Teed
Date:	22 Jan 2008

I would like to know the recommended way to shutdown a postfix
MX (no mailboxes) so that the active queue is processed and incoming
MX traffic can quickly try the next MX. On Redhat
I have used iptables firewall to do that, but on an old FreeBSD box,
I don't have that. Would changing "inet_interfaces" to "localhost"
in main.cf prior to system shutdown be the simple solution?

--Donald