I have encountered an issue I believe is extremely widespread (albeit intermittent) affecting deliverability to hotmail.com / outlook.com from .AU Domains. Cc: lukeh@padl.com; support <support@mail.support.microsoft.com>. Phishing Email with no "To" line : sysadmin - reddit They may even refuse me without explaining the reason. Sender and recipient domains have been changed from their originals, but the . Authentication-Results: spf=pass (sender IP is 147.253.223.243) smtp.mailfrom=sparkpostmail1.com; outlook.com; dkim=pass (signature was verified) header.d=flightsimulator.com;outlook.com; dmarc=bestguesspass action=none header.from=flightsimulator.com;compauth=pass reason=109 Received-SPF: Pass (protection.outlook.com: domain of sparkpostmail1 . Transport rule for authenticated sender - Microsoft Tech Community Authentication-Results: spf=pass (sender IP is 147.253.223.243) smtp.mailfrom=sparkpostmail1.com; outlook.com; dkim=pass (signature was verified) header.d=flightsimulator.com;outlook.com; dmarc=bestguesspass action=none header.from=flightsimulator.com;compauth=pass reason=109 . Should DMARC not fail when DKIM fails or? The sender is getting a bounce message with the following content which appears to be from postmaster@outlook.com.Is the btinternet address using a Microsoft backend? To: Greg Hudson <ghudson@mit.edu>. For domains where there is a high number of DMARC failures, you will get a large number of emails (1 per failure). You will also see text that shows the IP address of the originating server and whether the . It seamlessly routes inquiries created via email, web-forms and phone calls into a simple, easy-to-use, multi-user, web-based customer support platform. As 90% of cyber-attacks start with a phishing campaign, Office 365 is an attractive target for threat actors who work to evade the continuously introduced security solutions. Anti-Scam-Forum - Kristina <stanningey@gmail.com> Hybrid exchange mail loop - The Spiceworks Community Now scroll down to where you find the spoof settings and click Edit on the right. I'm still working and setting up DMARC . But why is it still marked as spam ? The below screenshots display a Microsoft 365 environment. Office365 DKIM not being signed | GoDaddy Community But I told them what a wonderful man you are. Domain Spoof Prevention in Exchange 2013/2016 & Microsoft 365 Scan to Email not sending as PDF - HP Support Community From: Support@LIMOTTAIT.com <Support@LIMOTTAIT.com> Sent: Tuesday, November 9, 2021 10:53:38 AM To: ALEC PETERSCHICK (V) <APETERSCHICK@LIMOTTAIT.com> Subject: [AUTO GENERATED] New Ticket #20211109-18# - ink for printer= La tua intestazione di posta elettronica conterrà probabilmente ancora più punti dati di quelli sopra elencati, ma questi sono i più comuni in tutti i client di posta elettronica.
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