On May 15, 2007, at 9:06 AM, Ernest Sales wrote:
[ ... ]
Honestly, I don't understand what each of this four daemons is
supposed
to do. I just want the minimal working sendmail config in a NATed
host,
the /etc/defaults/rc.conf reads as your sample, and init says
sendmail_outbound_enable is set to NO, which seems odd but dunno the
consequences.
There are only two daemons, actually: the MTA, and the client mqueue
runner.
The separation was made because sendmail used to run as a single,
setuid-root executable, and has had a rather infamous security
history as a consequence. If you want sendmail to be running and
listening on port 25 as a MTA, you need to set the sendmail_enable/
sendmail_outbound_enable to YES.
[ ... ]
Is there any standard, anything like the CIDR blocks reserved for
private networks?
The zeroconf/rendezvous stuff likes to use ".local" as the domain
unless other info is available.
Cool. Tried .local and works too. Looks like sendmail is happy with
finding 'dot anything' after the hostname. So far, my problem is
fixed.
But the init behavior for unqualified hostnames is less than optimal:
having to wait one minute until sendmail agrees --and it finally
agrees-- is annoying; and this happens for every sendmail daemon
launch.
As more end-users using PCs without FQDN jump to FreeBSD this could be
more heard of. Wonder if filing a PR; comments welcome.
The standard period for a DNS timeout is anywhere up to about two
minutes, depending on how many resolvers are configured in /etc/
resolv.conf. It's possible to tell sendmail not to use DNS, and
avoid this timeout, but normally people run mailservers only on
machines with working DNS and a sensible hostname. This isn't a bug,
it's just an assumption that sendmail makes which is typically
appropriate, but not for the case of a random client machine without
working DNS....
--
-Chuck
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