451 4.7.650 The mail server [149.72.37.212] has been temporarily rate limited due to IP reputation. For e-mail delivery information, see https://postmaster.live.com (S843) [AM5EUR02FT038.eop-EUR02.prod.protection.outlook.com]
Can’t send Password Reset emails or any emails kicked off my Bubble’s email system. Getting the above message for Outlook accounts. Please advise!
Messages to hotmail are also blocked:
550 5.7.1 Unfortunately, messages from [149.72.34.115] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3140). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [DM6NAM04FT042.eop-NAM04.prod.protection.outlook.com]
I found no solution to this. My workaround was to use Postmark plugin for emails How to integrate Bubble and Postmark | Postmark
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