Remote Server returned '550 5.7.501 Access denied, spam abuse - Microsoft Community


can please assist error message?  we started testing use of office 365 of our emails attempt send canxxxxcab.onxxxxxt.com <modified moderator due privacy> being returned spam.

thank you.

hi candlelightcab,


after checking ticket logs, issue should resolved already. please check , feel free post if need further assistance specific mail flow issue.

best regards,

vanessa



Office / Outlook / Windows other / Office 365 for business



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