If you are having delivery issues with your Microsoft Exchange or other mail server
If you are having delivery issues with your Microsoft Exchange or other dedicated mail server to any address controlled by AT&T this information will be useful. This includes email sent to BellSouth.net and all the legacy (SBC) Southwestern Bell companies.
Use this link to answer questions at AT&T and get your single IP address unlocked. http://worldnet.att.net/general-info/block_admin.html
These websites provides tools and information related to the enforcement AT&T's email policies.
Use of this web page is for Systems Administrators only and this removal request will only work if the IP space is reassigned directly to your company. Some common error messages from AT&T will look like this
Example: 550-xxx.xxx.xxx.xxx blocked by blacklist.mail.ops.att.net. 550 Blocked for abuse.
