Hello All, I have attempted to use a connector in our Microsoft 365 tenancy as a mail relay, however mail is being blocked with the below message:
"5.7.511 Access denied, banned sender[192.46.xxx.xxx]. To request removal from this list please forward this message to del...@messaging.microsoft.com. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653."; I did try to send an e-mail to the specified address however I received a "550 5.4.300 Message expired" bounceback. I've also tried having the IP address delisted using https://sender.office.com which reported the request was denied. If there is anyone on here from Microsoft that could assist, could you please reach out off-list? Thanks, Christopher Hawker
_______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
