For security reasons, all e-mail addresses starting with
non-alphanumeric characters were rejected. This is too broad and rejects
perfectly valid e-mail addresses. Only leading hyphens should be
rejected -- in all other cases e-mail address specification should
follow RFC 5322.
Co-authored-by: Andreas Fischer <_@ndreas.de>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
