July 20, 2026
How email breaks during a Google Workspace migration
A mailbox migration moves your mail. It does not move your authentication — and that gap is where deliverability quietly fails.
Notes
Notes
Field notes on email authentication — how it works, how it breaks, and how to read what receiving servers see.
July 13, 2026
You have a DMARC record. That doesn't mean you're protected.
Most domains with DMARC are sitting on p=none, which blocks nothing. Having the record and being protected are two different states.
July 6, 2026
The SPF ten-lookup limit, and why your record fails silently
An SPF record can be perfectly valid and still do nothing. The reason is a limit almost no free checker counts: ten DNS lookups.