From owner-freebsd-questions  Sun Jan  6 15:42:14 2002
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To: Cliff Sarginson <cliff@raggedclown.net>
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: Postfix port binding problem 
In-reply-to: Your message of "Sun, 06 Jan 2002 07:11:47 +0100."
             <20020106061147.GA1003@raggedclown.net> 
Date: Sun, 06 Jan 2002 15:42:03 -0800
From: "Kevin Oberman" <oberman@ptavv.es.net>
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> Date: Sun, 6 Jan 2002 07:11:47 +0100
> From: Cliff Sarginson <cliff@raggedclown.net>
> Sender: owner-freebsd-questions@FreeBSD.ORG
> 
> > In FreeBSD, /usr/sbin/sendmail is really a wrapper that can start
> > sendmail, postfix, qmail and probably others. It takes any sendmail
> > commands and reformats them for he mailer being used. 
> 
> This is not correct.
> 
> Postfix replaces sendmail with it's program called sendmail, which
> understands most of the relevant sendmail command line options.
> But *is* a postfix program.
> 
> It has links made to it for "mailq" etc.
> 
> The wrapper you refer to does not exist.
> How on earth did you come by this extraordinary idea ?

Cliff,

While I got the idea from previous discussion on this list, the
easiest confirmation is the man pages. Take a look at "man
mailwrapper". Also an "ls -l /ur/sbin/sendmail" (regardless of whether
the system has sendmail, postfix, or some other MTA installed) is a
strong hint.

Where did you get the extraordinary idea that Postfix replaces the
sendmail executable, at least when installed from the FreeBSD port?
:-) 

And, credit where it's due. This scheme which makes switching MTAs
almost totally transparent is from Perry Metzger.

R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman@es.net			Phone: +1 510 486-8634

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