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On May 17, 2025, at 6:01 PM, Eric C. Miller via NANOG <nanog@lists.nanog.org> wrote:

Hello,

Is anyone from Microsoft / Azure on the list that can help me with some blocked IP networks? I'm trying to understand what is triggering the issue.

Eric _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog@lists.nanog.org/message/SA3SKQIN...

Hello,

Is anyone from Microsoft / Azure on the list that can help me with some blocked IP networks? I'm trying to understand what is triggering the issue.

That's a good question! I don't know, I typically sign up to the Microsoft JMRP (https://sendersupport.olc.protection.outlook.com/pm/services), knowing what users are sending your emails to junk mail can be quite helpful in my experience. It's one of their only free options to guarantee email delivery. If somebody from Microsoft is here that could help; that'd be great. I had to switch my NANOG subscription from Microsoft over to another email system just to avoid bounces, so this knowledge would greatly assist the NANOG list as well. Then again, your comment is regarding blocked IP networks, do you have any more information to your issue? Is it email, or is it block from an IDS when visiting Microsoft assets? — Kate