Automated certificates removed the annual renewal panic and introduced new failure modes. Here is how ACME validation actually works, when to use DNS-01, and the records that control who may issue for your domain.
Running ns1.youragency.com instead of your host’s nameservers looks professional and quietly improves client retention. It also has failure modes worth understanding before you switch.
Most migration downtime is self-inflicted and comes down to TTLs set wrong, set too late, or set on the wrong records. Here is how caching actually behaves and how to plan a cutover around it.
Fifty sites, fifty DNS zones, hundreds of mailboxes — and one imagined catastrophe. A well-run migration is a checklist executed in a sensible order. Here is the checklist, and what to demand from the host receiving it.
Splitting mail and web hosting across two providers is common and entirely sensible. It also breaks mail client setup in ways that are easy to miss. Here is the full DNS picture.
SMTP encryption is opportunistic by default, which means it can be silently stripped. MTA-STS, DANE and TLS-RPT close that gap. Here is what each does, how to publish them, and how they interact.
