I am using Outlook 2007 to retrieve my_email@live.com. Last night I couldn't send email to gmail.com, the Undeliverable Msg tell me to login mail.live.com to resolve the issue. I got this "Action Required - Please sign in to Windows Live Hotmail" email from "staff@live.com". The email says
To continue sending messages, please sign in to your Windows Live Hotmail
account at http://mail.live.com . After you sign in, we'll show you a picture
and ask you which letters and numbers you see inside it.
This is part of our effort to stop junk e-mail and protect your inbox.
Thank you for helping us fight junk e-mail.
Sincerely,
The Windows Live Hotmail Team
*****
Is this necessary? How often do I have to login "mail.live.com" to prevent this to happen?