Thanks Robert for confirming my understanding; my customers are fine with me blocking inbound email from senders who haven't configured their tenant in accordance with Microsoft's guidance.
Lena, I would encourage you to advise your surname customer to follow Microsoft's guidance to improve email delivery. Best regards to all, Mark -- _________________________________________________________________ L. Mark Stone, Founder North America's Leading Zimbra VAR/BSP/Training Partner For Companies With Mission-Critical Email Needs ----- Original Message ----- | From: "Lena--- via mailop" <[email protected]> | To: "mailop" <[email protected]> | Sent: Saturday, September 21, 2024 6:41:23 AM | Subject: Re: [mailop] onmicrosoft.com customers forging @microsoft.com addresses for phishing |> From: "L. Mark Stone" <[email protected]> | |> FWIW, for a while now we have been outright blocking all email from any |> subdomain of onmicrosoft.com | |> If anyone has an example of how what we are doing would lead to a false |> positive, I would be grateful to know please. | | One of my 3500 customers uses email address @XXXXXzone.onmicrosoft.com | where XXXXX is her surname. | | SPF include:spf.protection.outlook.com | Received: from mail-cwxgbr01on2110.outbound.protection.outlook.com | DKIM-Signature: ...d=XXXXXzone.onmicrosoft.com | x-forefront-antispam-report: ...;SFV:NSPM;... | | _______________________________________________ | mailop mailing list | [email protected] | https://list.mailop.org/listinfo/mailop _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
