What goes wrong.
EDITING RECORDS IN THE WRONG PLACE
Changing cPanel records while nameservers point elsewhere. The most common mistake by a wide margin.
FORGETTING MX RECORDS
Nameservers changed, mail stops, and nothing announces it.
TWO SPF RECORDS
Both fail. Add mechanisms to the existing record instead.
A CNAME WHERE OTHER RECORDS EXIST
Unpredictable behaviour. A CNAME must be alone for its name.
NOT LOWERING TTL BEFORE A CHANGE
A day of inconsistent resolution that could have been minutes.
CANCELLING OLD HOSTING TOO SOON
Some visitors still being directed there.
FORGETTING A SUBDOMAIN
Serving old content from a previous server, confusing everyone.
LOSING VERIFICATION RECORDS
Search Console and business profile verification lapsing weeks later, silently.
LEAVING A HOSTS FILE ENTRY
Seeing a different site from everyone else, indefinitely.
NO ZONE BACKUP
Reconstructing records from memory after losing access.
DNSSEC ENABLED AND FORGOTTEN
A provider change breaking the domain entirely.
