Re: start multiple sendmail daemons from rc.conf?

From: Chris Cook (ccook_at_tcworks.net)
Date: 11/26/03

  • Next message: Bill Vermillion: "Re: start multiple sendmail daemons from rc.conf?" 
    Date: Tue, 25 Nov 2003 18:11:09 -0600
To: Andy Farkas <andyf@speednet.com.au>

    Hey Guys... any ideas on my original post that started the thread? :)

    Any way to start multiple sendmail daemons using different configs from
    rc.conf?

     :)

    Thanks,
    Chris

    Andy Farkas wrote:
    >
    > Bill Vermillion wrote:
    >
    > > > >So even though sendmail says it is rejecting connections
    > > > >(twice!), it then goes and accepts two more! Grrr.
    > >
    > > Well it's sort of hard to let the far systems know they shouldn't
    > > be sending any. If you look at the config file you will see that
    > > when sendmail reaches a certain limit it will not accept any more
    > > connections. So your resources are too low [as noted in the other
    > > poster comment below] as you run out of resources before you hit
    > > the limit that is in Sendmail. [see your .cf file and you could
    > > set the load average where you just queue messages and the point
    > > where you reject messages lower]
    > >
    > > > Thrash is correct and it would appear it happening from the
    > > > messages above. Sendmail checks the load average each time a new
    > > > request is received. If the average is above the threshold it
    > > > puts out that message and doesn't handle the request. Obviously,
    > > > when PIDs 71848 and 71861 were started the load average was
    > > > below the threshold. Running out of swap space is never going to
    > > > be a good thing. You need more memory or more swap space.
    > >
    > > Unless he's modified the sendmail.cf for different load values
    > > and moved them too high, then he probably needs both more memory
    > > and more swap space. And of course more memory means you need to
    > > add more swap space.
    > >
    > > Until he gets more memory he can add swap space - man 8 swapon -
    > > but to blame sendmail for an under powered or mis-configured system
    > > is wrong.
    >
    > I know exactly what happened to my system. I was there watching it self
    > destruct. But the beauty of FreeBSD is its stability; the box is still
    > running and hasn't even been rebooted.
    >
    > Yep, it needs more RAM and more swap. But that aint gonna happen :)
    >
    > Some background on my setup: sendmail, procmail, bogofilter, and
    > amavis/uvscan. sendmail receives a message, sends it to amavis which
    > spawns a uvscan, then procmail bogofilters it. Works well, but is rather
    > resource intensive (and as you've noticed, this box is under-resourced).
    >
    > If I disconnect from the 'Net for a few hours, mail gets queued upstream,
    > and when I reconnect, vast quantities of email come in all at once
    > spawning hundreds of processes. (the poo hits the fan at around 300 procs)
    >
    > My sendmail.cf has this in it:
    >
    > O QueueLA=3
    > O RefuseLA=4
    > O DelayLA=2
    > O MaxDaemonChildren=16
    > O ConnectionRateThrottle=3
    >
    > but the situation can still occur :)
    >
    > --
    >
    > :{ andyf@speednet.com.au
    >
    > Andy Farkas
    > System Administrator
    > Speednet Communications
    > http://www.speednet.com.au/
    >
    > _______________________________________________
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    > http://lists.freebsd.org/mailman/listinfo/freebsd-isp
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    -- 
Chris
o----< ccook@tcworks.net >------------------------------------o
|Chris Cook - Admin     |TCWORKS.NET - http://www.tcworks.net |
|The Computer Works ISP |FreeBSD - http://www.freebsd.org     |
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  • Next message: Bill Vermillion: "Re: start multiple sendmail daemons from rc.conf?"

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