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I am checking my website on mxtoolbox.com and getting some DNS errors. Two of those errors say "DNS Record not found". One has dmarc as category and the other is category spf.
My questions:
My website is http://www.zilvertron.com
Thanks for your time!
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In this instance, the solution is the same: edit the domain and click Change Settings. Then, wait for it to propagate. You can also try disabling and re-enabling Passenger on the same domain edit page as well, which changes the domain configuration settings without altering the domain DNS records.
DNS records are deleted when a given Windows client dynamic lease is changed to a reservation. DNS records that are currently registered by a DHCP-enabled Windows client are deleted by the DHCP server.
Whenever you make a DNS change, you almost always see a disclaimer saying it could take 24-48 hours for your change to fully take effect.
You use the ipconfig /registerdns command to manually force an update of the client name registration in DNS.
No, neither of those things will directly hurt your website, though they may cause you problems with sending email if the recipients score harshly in any spam management application.
There is some info on DMARC here and some info about spf here They are both used to help validate that messages are 'allowed' to be send from your domain & hosts and that your domain is who it says it is.
If you wanted to fix/add the records you need to have a look in your dns providers control panel and see what options they support, and how to implement them. Spf is easy - it's just a text record, DMARC/DKIM requires a bit more setup.
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