They provide e-mail addresses over their regular web interface as well. That's why the e-mail field in the account settings says '(publicly visible!)'. This guy is not outing a dangerous, unknown vulnerability—he's just making it a little bit easier for people to behave like obnoxious asses.
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They provide e-mail addresses over their regular web interface as well. That's why the e-mail field in the account settings says '(publicly visible!)'. This guy is not outing a dangerous, unknown vulnerability—he's just making it a little bit easier for people to behave like obnoxious asses.
It's a good way of getting your SMTP server blacklisted.