Hello, I’m reaching out on behalf of IOFlood (AS53755) and we are currently experiencing an issue where Microsoft appears to be blocking our entire IP space from delivering mail to Hotmail, Outlook, and MSN addresses. This has become a significant inconvenience and hassle for all of our customers who rely on email delivery to Microsoft domains. Unfortunately, Microsoft’s standard IP removal form is not a feasible solution given the size of our overall IP allocations. They only allow a /24 per request and while we have been working using this method, it would be near impossible to cover all of our IP space in any reasonable amount of time. We’re looking for anyone who may be able to assist directly, or who can point us to a contact or escalation path within Microsoft. If you have any guidance or contacts to share, I’d greatly appreciate it. Best regards, -- John Boucher Senior Technician - Input Output Flood, LLC *We Love Servers* web: www.ioflood.com email: support@ioflood.com twitter: @ioflood