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AdamGsm 5d ago
What to do when your cheap IP gets blacklisted by Microsoft · General Discussion
Rick20 said:
My emails to my professor keep bouncing
Check the bounce message in your mail client. If it says something like "550 SC-001" or references "protection.outlook.com" that's Microsoft blacklisting. Contabo's student plans are in the Nuremberg or Munich DCs usually, and those rang...