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
How to Improve Email Deliverability: 12 Steps in Order
Aug 27, 2026
Gmail spam filter: what senders can control
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How to blacklist an email address in Gmail
Aug 25, 2026
SPF record format: version, mechanisms, and qualifiers
Aug 25, 2026
Multiple SPF records: why they cause PermError
Aug 25, 2026
How to Create an SPF Record (Step-by-Step + Examples)
Aug 25, 2026
Check the Spamhaus blacklist: identify and fix a listing
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What is an email blocklist and how do you check one?
Aug 25, 2026
Dots in Gmail Addresses: Do They Matter?
Aug 25, 2026