[Dunedan]

After many years of regularly getting blocked by Hotmail and outlook.com, I just decided to reject every incoming email from Hotmail and Outlook with an error message explaining the situation. If they don't allow me to respond to emails sent by their customers, why would I allow them to send me emails in the first place?

[unclet]

If all indie mail servers blocked by Hotmail block mail from the blocker, it will make the big player review their blocking policy.

[Avamander]

You sure showed it to them. /s

Did you sign up to their JMRP to figure out what they didn't like or how were they blocking you?