You can get ahold of the Outlook/Live/Hotmail Postmaster folks via this form : http://go.microsoft.com/fwlink/?LinkID=614866 IME they are pretty responsive .. usually > 6hrs. Regards, Michael Holstein Cleveland State University ________________________________________ From: NANOG <nanog-bounces@nanog.org> on behalf of Chris Garrett <chris@aperturefiber.com> Sent: Thursday, September 17, 2015 12:32 PM To: NANOG Subject: Microsoft blocking mail Is there anyone on-list who can assist with an erroneous spam block to Outlook.com <http://outlook.com/>? One our our net blocks was added earlier today, 216.128.11.0/25 and I am having zero luck getting through to a clueful person at MS. Thank you! Chris Garrett | Network Operations Director tel: 678.370.2012 | mobile: 512.605.9620