[Bug 56544] New: Unable to create account: "Email is not allowed for sign-up. Please use your regular email address. Check with your administrator."

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56544

Bug ID: 56544
           Summary: Unable to create account: "Email is not allowed for
                    sign-up. Please use your regular email address. Check
                    with your administrator."
           Product: WineHQ Gitlab
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gitlab-unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Trying to sign up for an account on the Wine GitLab, I get this error:

"Email is not allowed for sign-up. Please use your regular email address. Check
with your administrator."

Are @outlook.com addresses blocked for some reason?