Question dmarc, spf, dkim setup problem

[PeterKi]

Server operating system version

Ubuntu 22.04

Plesk version and microupdate number

18.0.68 #2

I have 2 domains on my linux vserver with plesk obsidian 18.0.68 Update #2.
SPF, DKIM adn DMARC are enabled in the mail server settings and in the domains.
I don't have set an external DNS server.
So I think, I am very much on the defaults.
When I try the dmarcian.com/domain-checker, it shows "We were unable to find a DMARC record" and neither DMARC, SPF or DKIM records are found.
What am I missing here?
Do I need to configure something special on my server or on the domain hoster dns to get these security features working?
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[scsa20]

I'm guessing your domain is landango.de? I looked it up and your DNS is managed by host-on.

╭─ pwsh        133ms⠀     20,14:03 
╰─ dig -t ns landango.de

; <<>> DiG 9.16.28 <<>> -t ns landango.de
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6218
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;landango.de. IN NS

;; ANSWER SECTION:
landango.de. 86400 IN NS gamma.host-on.net.
landango.de. 86400 IN NS beta.host-on.net.
landango.de. 86400 IN NS alpha.host-on.net.
landango.de. 86400 IN NS delta.host-on.net.

;; Query time: 481 msec
;; SERVER: 192.168.2.51#53(192.168.2.51)
;; WHEN: Sat Mar 22 03:22:15 US Mountain Standard Time 2025
;; MSG SIZE rcvd: 130

Because your DNS is being hosted by host-on (which is probably your registrar) you will need to add the DNS entries manually into the the DNS settings in host-on. You can grab the settings you need from within the DNS settings in Plesk.

 

[PeterKi]

Thanks for the clarification.
I added the appropriate records to my domain registrar DNS and now dmarcian reports everything as set.
Alas, my test mails to my gmail account are not rejected anymore but still go into the spam folder.
Maybe I need to wait a while until my server's reputation with google gets updated.