Hotmail is rejecting subscription messages

[محروم.كوم]

Within the last two days, I've noticed a lot of "Message Delivery Failure" messages when subscription notifications are sent to a registered users with Hotmail addresses. Why would this happen all of a sudden, and is there anything either I or my users with Hotmail can do?



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The following recipient(s) could not be reached:

Recipient: [SMTP:[email protected]]
Reason: 550 SC-001 Mail rejected by Windows Live Hotmail for policy reasons. Reasons for rejection may be related to content with spam-like characteristics or IP/domain reputation problems. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help. Email/network admins, please visit http://postmaster.live.com for email delivery information and support __DEFINE_LIKE_SHARE__