I believe that I have set up everything correctly but since moving my nameserver to cloudflare, my outlook email stopped working. The webmail itself works but outlook doesn’t.
Chances are that your mail subdomain needs to be DNS only. Cloudflare doesn’t proxy SMTP connections, only HTTP/HTTPS, so for port 25/465/587 you need to either point your client directly to the IP address, or set the SMTP server’s DNS record to not be proxied (DNS only). Make sure to do this to both the A and AAAA record there for mail.
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That still didn’t work. I made all the mail related things DNS only and I still get the same error
Did you fix your SRV records so they point to the ‘mail’ hostname?
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