Date: Tue, 18 Jun 2002 16:10:34 -0700 (PDT) From: Doug Barton <DougB@FreeBSD.org> To: "Jin Guojun[DSD]" <j_guojun@lbl.gov> Cc: "Crist J. Clark" <cjc@FreeBSD.org>, <FreeBSD-arch@FreeBSD.org>, <gshapiro@yahoo-inc.com> Subject: Re: conf/39444: rc.sendmail syntax error: cannot disable sendmail Message-ID: <20020618155900.O2483-100000@master.gorean.org> In-Reply-To: <3D0FB406.83DE356D@lbl.gov>
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[ Greg, including you to get your opinion on my proposal below, and
switching to -arch for the same reason. ]
On Tue, 18 Jun 2002, Jin Guojun[DSD] wrote:
> "Crist J. Clark" wrote:
> > "NO" _can_ be used. It's meaning is different than "NONE." "NO" means
> > not to run the sendmail(8) listener, but the submitting and 'outbound'
> > daemons can still be run.
>
> sendmail does not need to run on background to send/submit outbound mail.
> The backgrounding daemon is solely for receiving inbound message.
There are two daemons started for "typical" mail _delivery_ purposes. One
is there to run the queue periodically. Current thought is that this is
superior to doing it through cron. The other is in fact there to receive
connections from the local host. This is new to recent versions of
sendmail, and allows the daemon that runs for that purpose to do so as an
unprivileged user.
> Nop, the manual page does not say "NO" can be used any where. If "NO"
> cannot be used, then, it is not compatible to existing sys-admin
> syntax. It forces to use "NONE" instead of "NO" as Doug's message
> in closing this case:
The problem here is that historically sendmail_enable="NO" always meant
"don't run a listener for incoming mail, but still let me send mail from
this host." The current situation preserves that meaning, even though it
still starts two sendmail daemons. What I think is confusing to users is
that we're trying to overload the sendmail_enable option to also handle
whether or not to use any kind of sendmail by adding the NONE value.
What I think we need is a new knob, something like use_real_sendmail, that
will default to YES, leaving the new status quo for sendmail_enable="NO"
intact, but also be able to completely disable all sendmail stuff,
including listeners for outgoing mail, queue runners, etc. That way users
can have a clear indication of what's going to happen, and the same YES/NO
syntax they are familiar with.
I'm definitely open to suggestions on the name of the knob, but what do
y'all think of the idea?
--
"We have known freedom's price. We have shown freedom's power.
And in this great conflict, ... we will see freedom's victory."
- George W. Bush, President of the United States
State of the Union, January 28, 2002
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