Comment on Why is DNS often joked about in the I.T. Industry?
brygphilomena@lemmy.world 5 weeks ago
Because so few understand it and so many things use it.
If you read a guide on setting up a website. They might have you change a DNS record and you might not realize it’s doing something else. Web developers frequently want to make changes to DNS and will change the name servers away to theirs but not migrate any of the records for anything besides the website. They’ll break EVERYTHING but hey, the website will load.
If you read a guide on connecting some service like hubspot. They will have you add spf records. But those need to be included with the existing ones and not just replacing what’s already there. Mess it up and every single email you send will get sent to spam folders.
dreugeworst@lemmy.ml 5 weeks ago
clueless dev who very rarely touches web apps here, what things would break if you dont touch other records besides those for tour website?
brygphilomena@lemmy.world 5 weeks ago
A records are usually fine for web dev, and some cname records. But if you move DNS to different name servers it doesn’t take the MX, srv, or txt with you.
Name servers are where all the DNS records are hosted. It tells every computer who is the authority on the information. If you change those without moving all the DNS records to the new location. All the old ones are no longer used at all. Even if they still exist on the old system.
Also spf records might also reference the websites a record to allow the website to send email without getting flagged as spam. If the site moves, but emails are still sent from the old IP address for a myriad of reasons it would break email. Like if they used some provider that hosted the site and emails on the same system, which used to be more common than it is today.
Natanael@slrpnk.net 5 weeks ago
Some dumb shit I see is setting SPF so Google is a trusted origin for email “to solve issues with sending to Gmail addresses” when what you’re supposed to do is add your mail servers as trusted origin.
Directionality, how does it work?