Greylisting -- Was: Anti Spam

Ted Mittelstaedt tedm at
Sat Apr 28 09:24:46 UTC 2007

> -----Original Message-----
> From: Bart Silverstrim [mailto:bsilver at]
> Sent: Friday, April 27, 2007 1:58 PM
> To: Ted Mittelstaedt
> Cc: Christopher Hilton; Grant Peel; Eric Crist;
> freebsd-questions at
> Subject: Re: Greylisting -- Was: Anti Spam
> On Apr 26, 2007, at 12:15 AM, Ted Mittelstaedt wrote:
> > There are legitimate technical reasons that someone may want their
> > mail
> > to not be greylisted.  For example, my cell phone's e-mail address is
> > in our monitoring scripts to page me in the event of a server failure.
> > I would be pretty pissed off if Sprint suddenly started
> > greylisting.  It
> > isn't just dumb-ass users making stupid political decisions to reject
> > it, although in your case it probably was.
> If it is a legitimate mail server, it would be promoted to the auto-
> whitelist.  Not all mail is constantly greylisted by most intelligent
> greylist systems.  Only the first few messages would be delayed,
> until it is established as legitimate.

That won't work in my case since I generally only have a failure that causes
a problem which results in paging about once every 3 months or so.  By the
 time the pages got through the
greylist it would be at least an hour later after the system had gone
down.  That isn't acceptable for a notification system.


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