Dominic Landry works on email deliverability and DNS configuration: the records a domain publishes, what breaks when they are wrong, and how a sending setup gets from unauthenticated mail to DMARC enforcement without losing legitimate messages on the way.
That work sits mostly in DNS. An SPF record that quietly exceeds its ten-lookup limit, a DKIM key still flagged for testing, a subdomain nobody remembered was sending: these are the failures that show up as delivery problems long before anyone thinks to read a DMARC report.
Dominic came to email infrastructure by an unusual route, after several years working in esports. He is based in Montreal, Quebec.
Connect with Dominic on LinkedIn.
Latest from Dominic
What is a DKIM CNAME record and how do you set it up?
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Fix Microsoft 550 5.7.515 Access Denied (NDR Error)
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Why is Microsoft 365 rejecting my email with a 550 5.7.x error?
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