NDRs for internal clients only?

From: Jon Ogden (anonymous_at_discussions.microsoft.com)
Date: 03/31/04 

Date: Wed, 31 Mar 2004 08:41:25 -0800

In Exchange System Manager go to the global settings
folder and then select properties of Message Delivery.
There is a tab in there called Sender Filtering. There's
a checkbox that says, "Accept Messages Without Notifiying
Sender of Filtering." But I think that only works on
specific senders you put in that box.

 However, sending an NDR to the e-mail address provided
in a spam message generally won't do anything. The e-
mail addresses that are used are rarely valid addresses
but are rather spoofed or forged. So the NDR gets sent
to the forged e-mail server and has no where to go......

The other alternative is to get a spam firewall that is
external to your exchange server and just blocks the
messages. Barracuda Networks makes several excellent
products (easiest product I've ever deployed on my
network). They work absolutely phenomenally.

IMHO, you want NDRs sent to people from the outside who
try to send you a valid message yet get the name or
address wrong.

Jon
>-----Original Message-----
>Can Exchange 2k3 be configured to deliver NDRs for mail
being sent out of
>the server, but not for mail coming into the server?
People at the office
>find the messages useful to let them know when they
mistype an address or
>send an attachment that's over the size limit of the
external receiving
>server. At the same time, sending NDRs for incoming
spam is not desired.
>If not possible now, this would be a good addition for a
future release.
>
>
>.
>

Relevant Pages

  • Re: Help! Being Used As A Relay
    ... "You mention that Open Relay occurs when my Exchange server accepts emails ... mails where neither the SENDER nor the RECIPIENT "domain" is LOCAL to your ...
    (microsoft.public.exchange.admin)
  • Re: Exchange Server 2000 relay problem.
    ... These may be NDRs from spam. ... Block Open SMTP Relaying and Clean Up Exchange Server SMTP ...
    (microsoft.public.exchange.connectivity)
  • Re: blocking spam ndrs that arent sent by user
    ... Have you or anyone else out there had any success in setting up the Sender ID filtering? ... The NDRs themselves are perfectly genuine, they come from legitimate mail servers, they would all pass SPF tests. ... Invalid email recipients should be detected at the SMTP transaction stage, the sending server informed and the message refused. ... Backup MX hosts that don't perform recipient verification are high on the list as well as Qmail based MTAs which almost always accept mail before firing a backscatter NDR. ...
    (microsoft.public.windows.server.sbs)
  • Re: Space-Storage-Degradation
    ... If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. ... I am running an "archiving" server -that is, ... End users are using their Exchange Mailbox as a document ...
    (microsoft.public.exchange2000.admin)
  • Re: Emails Not being delivered
    ... > external emails cannot deliver to the recipients on your SBS 2003 Server. ... > a global POP3 mailbox or individual user POP3 mailboxes? ... the sender was also able to send to one of our POP3 ... > email on Exchange Server side or client Outlook side. ...
    (microsoft.public.windows.server.sbs)