SBCglobal stands for Southwestern Bell Company which is a part of Att.net mail and Att.net is sponsored by the Yahoo due to which Yahoo ID is necessary in order to login the SBCglobal.net as Sbcglobal.net, Att.net and Yahoo are interrelated to with each other.
SBCGlobal email is being used by millions of people around the world. They generally go to www.SBCGlobal.net email in order to register on websites and subscribe to their newsletters. They are just facing the problem of register onto a website or get notification emails from a domain which has @sbcglobal.net behind it. There is no any concrete solution for this problem due to which users were told to change their email address.
Some of the reasons which leading to this issue is email server getting blocked and the notification emails might be sent to the spam folder instead of the inbox people forget to change the settings through the user control panel of the website. User control panel is one of the places where they can change their email along with other settings for getting emails from a certain website and so on. If you have put the mails and other notifications of a specific website in the spam folder, then it will lead to multiple issues and also affect their accounts.
Sometimes the issue is with the email server too and in order to fix it, you need to get in touch with the domain administrator as it is responsible for all the changes which are being occurred in SBCGlobalnetmail address. At present context all the changes are being performed by AT&T because it owns the access of SBCGlobal email.
The process of unblocking a website can take long period of time so you need to be prepared for an exhausting process.If the problem is not getting resolved by contacting SBCGlobal email admins, then you need to contact email help and support providers of it because they will take the issue in their hands and provide the most appropriate solution for yours problems.