If you are sending spam content unintentionally, the SBCGlobal email server may block your IP address. SBC Yahoo login closely monitors the behavior of the users. IP address blocking is a serious issue which can be fixed in the following way.
You need to visit a third party source website to find out whether your IP address is blocked or not. If you find your IP address in the block list, then you have to follow the next steps to rectify.
Now you have to go to the official website of the email service. And there you need to request to remove your IP address from the list of the blocking IPs. Please find the website link here: http://www.att.net/general-info/bls_info/block_admin.htm
The process to request for removal of the IP address will be completed by the system admin. You need to insert some information regarding your account and system to complete the requesting process.
