Comment 1 for bug 1786920

Writing as a forum admin who has been notified about this bug report along with all forum staff.

There is no bug. The email domain you used is in our blacklist because of abuse by spammers. If you are unable to use an alternative email address in your SSO account, or if you need any further help with registering to the forum, please send an email to the Forum Council mailing list whose email address can be found on this page:

https://wiki.ubuntu.com/ForumCouncil

One of the forum admins will then be able to help you. This is not the place to resolve this issue.