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Re: What happen if two host forward email to each other?

On Mon, 05 Jun 2000, Brad wrote:
> On Tue, Jun 06, 2000 at 01:42:58AM +0800, hingwah wrote:
> > For example,a user have a username of foo in 2 host,host1 and
> > host2.............
> > in host1 .........content of .forward : foo@host2
> > in host2 ...........content of .forward : foo@host1
> > what  will happen?the email sending to each other nonstoply? making the
> > mailing server very busy?
> > or the email will be discard?
> I believe it depends on how smart your mail daemons are. Modern ones
> should be smart enough to stop this from causing too much trouble.

Yes. I don't know about Exim, but I think Postfix can detect and kill the
mail loop in the second iteration (ABA). I recall it doing exactly that when
I botched up its config file once, creating a nasty loop...

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh 

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