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I started this thread over a month ago. Everyone contributing to this thread claims there is a setting to disable NDRs in Exchange 5.5. I've searched all the options in the Internet Mail Connector. I can't find it. I feel as if I am searching for a UFO. Everyone claims they are out there...

Brontosaurus, Good diagnosis on the NDR. I have the problem and ISPs are constantly running open relay tests on my Exch55 server. BTW, relay is definitely blocked on my server. How does one disable ALL NDRs? I hate to do that since mistyped emails will not generate NDRs to people who...

I have rerouting enabled and I am not an open relay. The reverse UCE described in the above article is not happening to me since I am rerouting. I did notice Out of Office Notification to Internet is enabled. I will disable and see if things improve. Is there any way to disable all NDRs to...

Two spams for the price of one! I'm running an Exch5.5 server that is being bombarded with SPAM(1). The spammers are sending to anyone@mydomain.com and they are using fictitous sender email addresses. I don't have many mailboxes, so most of the mail results in invalid delivery addresses. As...

I'm about to run eseutil on Exch 5.5. Is it necessary to shut down NAV for MS Exch? Also, I am mirroring - should I break the mirror before eseutil?

I have a similar but different problem. Someone had hacked and corrupted my \exchsrvr\webdata\usa folder. I restored the folder from a very old backup but I don't know if the files are SP4. OWA is working fine so I don't want to reinstall. I just want the lastest OWA components. Does anyone...

I have a similiar problem. I am running Exchange 5.5 SP4. I have no limits on recipients, MTA, IMS or information store. My information store is well below the 16GB limit. I keep getting the message. "26495160 bytes exceeds server limit of 20480000" I've checked all my server...

SPAM VICTIM SEEKING HELP. I am trying to stop an open relay from delivering spam to my server. I am NOT the open relay in question. I have tried message filtering on the open relay’s domain. This doesn’t work. The spammer is generating random sender addresses. Therefore, I need to filter...