Hi,If the DNS server running on CentOS 6.10 (or hgher) is indeed a public DNS server, which means it is available over the internet and serving your domain name it should be able to 'publish' the records.Because I do not know the domainname in use I cannot verify it, but if you're using the bind tools package, you could do the following:dig ns domainnameIt should give a list of the DNS servers for your domain. It should point to publically available DNS servers, otherwise it won't work.If you are inside your company network, you could also use:dig @8.8.8.8 ns domainnameThis shows the same, but then seen from the outside. If it throws an error it might be that DNS access is restricted.You can verify if the domainkey is published correctly by doing:dig @8.8.8.8 txt qualtrics._domainkey.domainnameWhere the DNS entry should exactly be as given to you by qualtrics.Good luck.
Hi,It's a late response, but if you have not received an answer yet my response might still be helpfull.Adding DKIM records for Qualtrics or any other sender that supports/uses DKIM does not mean you have to add DKIM for everything at the same time. A DKIM record is unique for every sending mailserver! You can have multiple DKIM records for every sender in your domain, as long as the selector is unique. The selector is something like:s1._domainkey.example.coms2._domainkey.example.comqualtrics_1234567._domainkey.example.comqualtrics_2345678._domainkey.example.cometc...So, if you implement DKIM on your own mailserver (which is recommended) you just select a new name for a selector.More information I found very informative can be found here:How to Implement DMARC/DKIM/SPF to Stop Email Spoofing/Phishing: The Definitive Guide - DMARCLYI have no relation with dmarcly, I just found their information to be useful.Good luck!
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