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Latest Comments

I too am having problems with this impacting emails that are auto-forwarded or redirected (using a rule) from one consumer Microsoft account to another. To reproduce: 1. Set up an email redirect rule to send email from account1 @ example.com to account2 @ example.com2. Get someone who has a dmarc re...
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perhaps mentioned in previous comments.This change has broken the "Delivery Management" component of groups. If you add a user with this guid4name in the specified senders of 365,DL, MESG, DDDL they will not have the permission to send.shows up as Specific senders: <insert guid here>And you get the ...
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@Nino BilicThere was a mismatch between our Exchange and AD servers with the LmCompatibility value. Once we made those values match the failed logons stopped happening.Thanks for your help.
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@PankajNTT Relay does require the capture of credentials by "some means". Now is this via vulnerable Outlook or something else is a different question. This is not a new attack vector. We in Exchange have simply made it so Exchange servers are protected from this vector by default (or once EP is tur...
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@JasonBrown360 Please check that there is not a mismatch between your Exchange and AD servers when it comes to the value of LmCompatibility value: Network security LAN Manager authentication level - Windows Security | Microsoft Learn
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