Fortunately I was able to raise a ticket through the M365 Admin Portal, they asked a few questions about the company and were able to remove the IP address from their spam block list.
Regards, Christopher Hawker ________________________________ From: Agathe Allard <aall...@mindbaz.com> Sent: Thursday, September 1, 2022 7:13 PM To: Christopher Hawker <ch...@thesysadmin.dev> Cc: Christopher Hawker via mailop <mailop@mailop.org> Subject: Re: [mailop] Microsoft 365 Mail Blocking Hello, We've been seeing the same errir for several weeks now too for information.... Thanks, Agathe Le jeu. 1 sept. 2022 à 10:59, Christopher Hawker via mailop <mailop@mailop.org<mailto:mailop@mailop.org>> a écrit : Hello All, I am currently receiving the below error when attempting to send e-mails to M365 e-mail addresses using an Exchange connector as a relay within a tenancy: 550 5.7.708 Service unavailable. Access denied, traffic not accepted from this IP. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653 AS(8564) [MEYP282MB2719.AUSP282.PROD.OUTLOOK.COM<http://MEYP282MB2719.AUSP282.PROD.OUTLOOK.COM>] [SYYP282CA0011.AUSP282.PROD.OUTLOOK.COM<http://SYYP282CA0011.AUSP282.PROD.OUTLOOK.COM>] [SY4AUS01FT014.eop-AUS01.prod.protection.outlook.com<http://SY4AUS01FT014.eop-AUS01.prod.protection.outlook.com>] If there is anyone from Microsoft on-list, could they please reach out to assist with resolving this issue? Thanks, Christopher Hawker _______________________________________________ mailop mailing list mailop@mailop.org<mailto:mailop@mailop.org> https://list.mailop.org/listinfo/mailop -- Agathe Allard DELIVERABILITY MANAGER Telephone 03 74 09 85 41 MINDBAZ - 125, AVENUE DE LA REPUBLIQUE - 59110 LA MADELEINE
_______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
