Greylisting -- Was: Anti Spam

[Ted Mittelstaedt]

> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org
> [mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Kenny Dail
> Sent: Sunday, April 29, 2007 8:18 PM
> To: freebsd-questions at freebsd.org
> Subject: Re: Greylisting -- Was: Anti Spam
>
>
> > > I'm monitoring systems at the ISP I work at.  No, it is not life or
> > > death
> > > if a feed goes down for 3 hours and a bunch of people cannot download
> > > their daily freebsd-questions mailing list fix.  At least, I don't
> > > think
> > > so.  But they do.  And as their money that buys the ISP's product puts
> > > the bread on my table, I have to do what they want.  And they want
> > > instant
> > > response if there is a problem in the ISP's systems.  That won't
> > > happen if
> > > the monitoring system's e-mails that get sent out when there is a
> > > problem
> > > lie around in a mail queue for an hour waiting for a greylist at the
> > > cell company to let the messages through.
> I understand where you are coming from on this, of course email is not
> the right medium to use for notifying of email failures.

Obviously.

> We built an SMS
> gateway.

That is one way to do it, there are others.  In our case, since we have
a number of mailservers, we simply pair them up to monitor each other
specifically for mail failures.

Ted