AT&T Worldnet.

System Administrators

For System Administrators. All Fields Required.

Please do not bookmark or otherwise save this page - it will be changing on a regular basis to prevent automated submissions.
IP address (from the NDR):
Your Name:
Company Name:
Your e-mail address:
Phone #:
Paste in the relevant lines of
the NDR you received:
(See Example)
What changes have you made to your configuration since you have been blocked? Reinstalled Antivirus and Firewall - Removed viruses
ACL to block egress SMTP traffic was created
Removed/blocked machine from network
Removed vulnerable script from webserver
Removed malicious user from network
Reconfigured server to ignore NDRs to forged addresses/domains

Note: Information collected on this form will be used only for the purposes of resolving your NDR issue.

All requests for removing blocking must be sent through the submission form above. For questions related to a request, please contact us at

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