Over the past couple of weeks, we've seen several legitimate messages rejected because DMARC verification failed. In roughly 20 years of handling email, I've only encountered this once…
I received an oddly formatted email claiming that I need to re-attest my network access for Microsoft's Smart Network Data Services (SNDS). The message passed SPF and DKIM,…
Over the past couple of weeks, we've had about five legitimate messages from different companies rejected because they failed DMARC verification. In roughly 20 years of handling email,…
I'm building a website with a user table for managing subscription plans. Authentication and confirmation emails are handled through Supabase, but after redirecting the setup, the messages appear…
I'm building a website with a user table for managing subscription plans. Authentication and confirmation emails are handled through Supabase, but after redirecting the email flow, the messages…
Exchange Online suddenly stopped receiving messages from some services, including PaperCut. The sender receives this error: "550 5.7.509 Access denied — sending domain papercut.com does not pass DMARC…
Our organization uses Exchange Online, and starting last night we stopped receiving scan notifications and other messages sent through PaperCut. The sender receives this error: "550 5.7.509 Access…
My main domain is more than 25 years old and has never been used for spam. Until recently, email forwarding through WHM/cPanel to Gmail worked normally. Seven days…
My primary domain is more than 25 years old and has never been used for spam. Until recently, email was forwarded through WHM/cPanel to my Gmail account without…
We migrated an email domain from one Microsoft 365 tenant to another, but an application still uses a mailbox in the old tenant to send mail through Exchange…
Our company website uses Gravity Forms to collect submissions and send notification emails to our company inbox. The messages are being quarantined as phishing because DMARC is failing.…
We've noticed some phishing emails that appear to originate from Truist. What's concerning is that these emails have valid SPF, DKIM, and DMARC checks. The headers show they're…
I've noticed that our transport rule in the Exchange Online Admin Center for handling impersonation emails is set to quarantine emails marked with 'spf=softfail' or 'spf=fail' from outside…
We received what seem to be phishing emails from Truist, but interestingly, these emails are passing SPF, DKIM, and DMARC checks. The emails appear to be originating from…
I'm looking for advice on setting up SPF and DKIM for a customer using Gusto to send emails. They use Microsoft 365, and I want to ensure their…
I've noticed a surprising trend where various IT departments seem to overlook DKIM, DMARC, and SPF settings when they implement third-party services. Is this really as common as…
I've been facing a frustrating issue with emails being blocked from reaching Outlook, Hotmail, and other Microsoft domains. I have a strong reputation with my IPs and my…
I'm hoping to get some clarity on how email authentication protocols like SPF, DKIM, and DMARC affect message delivery to Gmail and Outlook as of 2026. Specifically, I…
I've been dealing with a frustrating issue regarding email deliverability this week. My outgoing emails to Outlook recipients are getting deferred due to a vague "low reputation" bounce,…
I'm experiencing issues with emails sent from my domain to Gmail being flagged as spam. Recently, I've been getting a 550-5.7.1 error stating that my domain has a…