What is the name of the domain?
daikerjohn.cc
What is the error number?
550 5.7.1
What is the error message?
upstream (hotmail-com.olc.protection.outlook.com.) error: failed to initalize: Unknown error: permanent error (550): 5.7.1 Unfortunately, messages from [104.30.10.96] weren’t sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to Troubleshooting. [Name=Protocol Filter Agent][AGT=PFA][MxId=11B9B99069A55ADE] [SJ1PEPF0000231E.namprd03.prod.outlook.com 2024-09-27T15:52:35.577Z 08DCDCC
What is the issue you’re encountering
Emails are not being routed to Outlook.com