DNS & email nightmare
Recently I had to move my email server from my home office to a VPS provider. In doing this problems appeared that I had not had before. First all I changed was the IPV4 address of the mail server to the new VPS address. Then wanting to do all I can to secure the new email server software Mailcow. I added new DNS records for DKIM, SPF and DMARC & attempted to add the PTR record. This where things got weird. Coludflares documentation instructs to add a site. I had to dig to understand that it should say domain because to Cloudflare they are the same. OK, I did that & I was instructed to add two DNS records but I don't own the in-addr.arpa domain so I added them to my domain in addition to the other two Cloudflare DNS servers. Thing seemed to work for several days maybe a week but now I received an email from Cloudflare below & DNS resolution for my domain fails. Any help would be appreciated. Thanks.
>> Hello,
>>
>> The nameservers for [EXAMPLE].com no longer point to Cloudflare. They now point to:
>>
>> matt.ns.cloudflare.com
>> coraline.ns.cloudflare.com
>> veda.ns.cloudflare.com
>> yisroel.ns.cloudflare.com
>> [not set]
>>
>> This change means that [EXAMPLE].com is no longer using Cloudflare and will not receive the benefits of Cloudflare's security and performance services. Your DNS records will be completely removed from Cloudflare's system in 7 days.
>>
>> If the nameserver change was in error, reactivate your domain by pointing your nameservers back to:
>>
>> matt.ns.cloudflare.com
>> veda.ns.cloudflare.com
>>
>> Once you have completed this change, click the “Check Nameservers” button in your Cloudflare dashboard to ensure your domain stays active on Cloudflare.
>>
>> You can take these steps by visiting the Cloudflare dash at the link below:
>>
>> https://dash.cloudflare.com/a694638dc28d6062fe3f403ab77100ce/example.com
>>
>> Thank you,
>> The Cloudflare Team
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