How do I prevent the default SMTP service (IIS6) from sending
out non delivery emails when an account does not exist ?

This seem to be a huge loop hole in the current implementation,
spammers try somename@mydomain.com and IIS happily
tells them there is no such email.

Most of the time the reply address does not even exist which
means I have a hundreds of emails being queued and put into
the badmail folder all the time.

Apparently there is no way to disable this from inside the admin,
is there a way through the registry or installling some utility ?

Thank you
PL.

[ Post a follow-up to this message ]

I guess this was a common question but no solution it seems
except that catch all script.

I guess I could set up a "catch all" and then schedule deletion
of the emails in that folder.

PL.


"PL" <pblse2@yahoo.se> skrev i meddelandet
news:OGLpoQNmEHA.236@TK2MSFTNGP10.phx.gbl...
>
> How do I prevent the default SMTP service (IIS6) from sending
> out non delivery emails when an account does not exist ?
>
> This seem to be a huge loop hole in the current implementation,
> spammers try somename@mydomain.com and IIS happily
> tells them there is no such email.
>
> Most of the time the reply address does not even exist which
> means I have a hundreds of emails being queued and put into
> the badmail folder all the time.
>
> Apparently there is no way to disable this from inside the admin,
> is there a way through the registry or installling some utility ?
>
> Thank you
> PL.
>

[ Post a follow-up to this message ]

"PL" <pblse2@yahoo.se> wrote in message
news:OGLpoQNmEHA.236@TK2MSFTNGP10.phx.gbl...
>
> How do I prevent the default SMTP service (IIS6) from sending
> out non delivery emails when an account does not exist ?
>
> This seem to be a huge loop hole in the current implementation,
> spammers try somename@mydomain.com and IIS happily
> tells them there is no such email.
>
> Most of the time the reply address does not even exist which
> means I have a hundreds of emails being queued and put into
> the badmail folder all the time.
>
> Apparently there is no way to disable this from inside the admin,
> is there a way through the registry or installling some utility ?
>
> Thank you
> PL.

I think that is a function of the POP3 (or Exchange) server. The SMTP server
just accepts everything for the domains that it is authorized to receive
for. If the POP3 server is not running it all goes to the drop folder
(c:/InetPub/mailroot/Drop). When the POP3 server is running, it further
processes the messages and probably creates the NDR. I don't have Win2003
running, but check the POP3 options for a silently discard option.

[ Post a follow-up to this message ]

> I don't have Win2003 running, but check the POP3 options for a silently
> discard option.

Unfortunately there is no such option anywhere, it's pretty strange
considering MS new
security strategy to overlook something as simple as this.

And buying Exchange server is not an option for small companies.

I solved it for now with the "catch all" vbs script advertised in an earlier
post I found about
the same issue and then I simply scheduled a batch file that deletes the
emails that end up
in that folder regularly.

Suddenly the queue is very clean, valid emails get delivered instantly and
memory usuage
has dropped significantly on the server.

PL.

[ Post a follow-up to this message ]

On Sun, 12 Sep 2004 17:05:05 +0200, "PL" <pblse2@yahoo.se> wrote:

>I guess this was a common question but no solution it seems
>except that catch all script.
>
>I guess I could set up a "catch all" and then schedule deletion
>of the emails in that folder.

That's about the only way with Microsoft's SMTP server.  But at least
it works well.  

Jeff

>"PL" <pblse2@yahoo.se> skrev i meddelandet
>news:OGLpoQNmEHA.236@TK2MSFTNGP10.phx.gbl... 
>

[ Post a follow-up to this message ]

On Sun, 12 Sep 2004 10:47:25 -0600, "m.marien" <mm AT RiverCityCanada
DOT com> wrote:

>
>"PL" <pblse2@yahoo.se> wrote in message
>news:OGLpoQNmEHA.236@TK2MSFTNGP10.phx.gbl... 
>
>I think that is a function of the POP3 (or Exchange) server. The SMTP serve
r
>just accepts everything for the domains that it is authorized to receive
>for. If the POP3 server is not running it all goes to the drop folder
>(c:/InetPub/mailroot/Drop). When the POP3 server is running, it further
>processes the messages and probably creates the NDR. I don't have Win2003
>running, but check the POP3 options for a silently discard option.

NDR's are a function of SMTP, not POP.  POP is merely for retrieval of
mail.

Jeff

[ Post a follow-up to this message ]