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RSS Error S3150 is processed as soft bounce. Should be an Error

Thread starter Alpha1
Start date Nov 24, 2025

Alpha1

Guest

Guest or Bot

Nov 24, 2025

Error S3150 frequently occurs with Microsoft email domains. Its not a real bounce, but a notification that the admin needs to take action.

Code:

550 5.7.1 Unfortunately, messages from [173.198.243.126] 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 http://mail.live.com/mail/troubleshooting.aspx#errors. [VE1EUR01FT080.eop-EUR01.prod.protection.outlook.com 2024-02-02T21:37:21.315Z...

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RSS Error S3150 is processed as soft bounce. Should be an Error

Alpha1

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