Hello, we receive multiple complains from out customers not getting notification messages from Microsoft. Our DMARC filter reject them.
investigation show: Source-IP: 51.4.72.88 (mail-fr1ger01on0088.outbound.protection.outlook.de) RFC5321.MailFrom: bounces+SRS=+yUcM=y...@spogermanyeop.onmicrosoft.de RFC5322.From: no-re...@sharepoint.de The message contain a valid DKIM-Signature d=spogermanyeop.onmicrosoft.de The message is ARC-signed d=microsoft.com SPF pass for spogermanyeop.onmicrosoft.de DKIM pass for microsoft.com DMARC fail because no authentication in related to sharepoint.de The message is rejected because sharepoint.de has set DMARC setting p=reject As the RFC5321.MailFrom isn't *@sharepoint.de a DKIM-Signature for sharepoint.de is the only option to make such messages could be authenticated by DMARC. I like to ask if other ESP have similar observations. -- A. Schulze DATEV eG _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
