The RFC isn't real clear on this. We've gone round on this before and it
seems that server can optionally deny the message up-front or accept it and
than NDR it back to the sender. Exchange does the latter.

----- Original Message -----
From: "Siegel, Richard" <[EMAIL PROTECTED]>
To: "Exchange Discussions" <[EMAIL PROTECTED]>
Sent: Wednesday, January 09, 2002 1:55 PM
Subject: RE: IMC originator <>


> Ok, but they should not be sending ndr's in response to notification
> messages is my point. If relaying disabled, messages that are 'spoofed'
> should not generate an NDR in my opinion. I mean, why should it send and
> fail send and fail to hosts that don't exist just to say, 'invalid host'
or
> relaying prohibited or am I missing something?
>
>
>
> -----Original Message-----
> From: Lefkovics, William [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, January 09, 2002 2:41 PM
> To: Exchange Discussions
> Subject: RE: IMC originator <>
>
>
> They will still appear for standard, valid NDR's as well.
>
> William
>
> -----Original Message-----
> From: Siegel, Richard [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, January 09, 2002 11:42 AM
> To: Exchange Discussions
> Subject: RE: IMC originator <>
>
>
> So I should ignore those if they are not causing any other problem?
> I have followed all the suggested reccomendations regarding relaying.
>
> Rich
>
> -----Original Message-----
> From: Daniel Chenault [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, January 09, 2002 1:41 PM
> To: Exchange Discussions
> Subject: Re: IMC originator <>
>
>
> That is your server NDRing the attempted relays back to the spammers.
Since
> spammers tend to use bogus addresses those messages will likely timeout
> after three days as undeliverable.
>
> ----- Original Message -----
> From: "Siegel, Richard" <[EMAIL PROTECTED]>
> To: "Exchange Discussions" <[EMAIL PROTECTED]>
> Sent: Wednesday, January 09, 2002 12:18 PM
> Subject: IMC originator <>
>
>
> > I believe I have closed my mail server: smtp.actv.com from relaying,
> however
> > whenever I go into the IMS queues, I am still seeing messages with
> > originator <> with destination another host.  What is up with this, am I
> > missing something?
> >
> > Rich
> >
>
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