What is the name of the domain?
safesociety.net
What is the error number?
550
What is the error message?
Unknown error: permanent error (550): 5.7.1 Unfortunately, messages from [104.30.10.187] weren’t sent. Please contact your Internet service provider since part of their network is on our block list (S3150).
What is the issue you’re encountering
routing email is block
What steps have you taken to resolve the issue?
Change the quotation on my spf but nothing else
1 Like
I’m having similar issue with e-mail being forwarded to hotmail.com being blocked intermittently.
upstream (hotmail-com.olc.protection.outlook.com.) error: failed to initalize: Unknown error: permanent error (550): 5.7.1 Unfortunately, messages from [104.30.10.2] 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=11BA582CAA87E160] [BN2PEPF000055DD.namprd21.prod.outlook.com 2025-01-10T13:27:52.872Z 08DD2C16