Forum Discussion
Remote Server returned '550 5.7.501 Access denied, spam abuse detected.
Anyone else receiving "Remote Server returned '550 5.7.501 Access denied, spam abuse detected." when attempting to send from @<O365subdomain>.onmicrosoft.com? Found various discussions that me...
I am getting same error whenever I send any mail to any one (Inside the group or outside the group).
Please help me.
Delivery has failed to these recipients or groups:
mailto:o365su12@microsoft.com
Your message wasn't delivered because the recipient's email provider rejected it.
Diagnostic information for administrators:
Generating server: BM1PR01MB2561.INDPRD01.PROD.OUTLOOK.COM
o365su12@microsoft.com
Remote Server returned '550 5.7.501 Service unavailable. Spam abuse detected from IP range. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653. S(2017052602) [BM1PR01MB2532.INDPRD01.PROD.OUTLOOK.COM]'