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...
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