Potentially regularly check the SPF record Microsoft publishes and resolve all the steps and use that list to trigger your rejection?
That should catch any of the domains including people who move to M365 hosting for their services. Regards Alexander Alexander Neilson Neilson Productions Limited 021 329 681 [email protected] > On 9 Feb 2026, at 13:12, Doug via mailop <[email protected]> wrote: > > Microsoft has redlined my neighborhood and the decision is final. I am > blocked. Ok, fine. What can I really do about it? But now I can't reply to > any email that comes from @outlook.com, @hotmail.com, etc. > > As a side note, I wish I lived in a world where mail servers were denied from > sending emails to servers they block. I get that this is infeasible, that's > why I said "I wish". It's just not fair that they can basically defame me by > making it look like I'm not responsive when, really, they don't check to see > if they are sending to a recipient that they themselves have blocked. > > Out of principle, I'm going to bounce these emails with a message telling the > sender to use a different email service to reach me. I know this isn't going > to make Microsoft to change or anything, but maybe it will push some people > to use a smaller provider. > > I'm wondering if anyone can give me pointers on the best way to block > Microsoft email senders. It seems like they have a lot of domains and I'd > like to block as many as possible. Any advice anyone has for the most > comprehensive way to do this would be much appreciated. > _______________________________________________ > mailop mailing list > [email protected] > https://list.mailop.org/listinfo/mailop _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
