DKIM check not signed

Hi, I am hosting my domains at CloudFlare and VPS is on Godaddy (If that useful), I've configured the spf for the domain and checked it by mail-tester.com and it gave me an authorized mail sender, while for DKIM gave me "Your message is not signed with DKIM" despite it is installed and checked by the same tester and mxtoolbox and when use default selector it gave me correct signiture, but why email tester both mail-tester.com and appmaildev.com/en/dkim gave me the same issue that the message is not signed with DKIM!!

Hope find a solution for emails don't sign with DKIM, is there any missing configuration? .. I've searched too much at google but couldn't find any solution there, thank you.

 

I use the default selector, and I tested DKIM record with many tools such as mxtoolbox and others, al of them returned success, here result when I tested your command

Code:

[root@hs01 ~]# dig txt default._domainkey.domain.com

; <<>> DiG 9.9.4-RedHat-9.9.4-73.el7_6 <<>> txt default._domainkey.domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1438
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;default._domainkey.domain.com. IN TXT

;; ANSWER SECTION:
default._domainkey.domain.com. 300 IN TXT  "v=DKIM1\; k=rsa\; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtVWSDeGG1ClQB2/0z74KotOcndDDTO02MP96msNJVoZtOXOPctvOjAAk9e+rD020iBioZdSJabakhrX348Uey/eRLHTL01elp3WPaE1G0ViOT2Ab8ANL35nUiWMNsLG2ppOzBf1dVhYLzCsZXpXdKT4ZA7tLRqZNjqdCQYMUsPGUoiSlyhiEQr7lDaXPOKp3R" "LzhtVyG/DEE9lOw0SdjXoA57CnO7sOzMeIkPuBekviCY8YzgJJN4Xcu/2AmIszTVWxDNqBxcNVbNiSQp2x+FsriAMd1FC+DQ58DdRu5eAibo3M6IRPW80Lymg8GKpnMMoF8chzd0j773+5M+NTtnwIDAQAB"

;; Query time: 15 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Tue May 14 02:18:58 EEST 2019
;; MSG SIZE  rcvd: 487

 

I've checked it manually with source of email, and didn't find DKIM signature too, it is not there.
Note: DNS is hosted by CloudFlare and txt record added there as suggested in Email Deliverability section at CPanel

 

Is there any required header has to be added for exim or such that? .. or is there any log file I have to check if there is an error logged?

 

Ticket ID: 12307521 Missing DKIM Signature at outgoing emails

 

It has been solved by CPanel Technical Guy, where he found in Exim configuration
send_to_smart_host:
driver = manualroute
route_list = !+local_domains example.prod.123.secureserver.net
transport = remote_smtp

the last line has to be like that
transport = dkim_remote_smtp

Don't know if it is Godaddy's faulty or what, but what is the difference?

 

I think it is a Godaddy faulty where they have to either mention that in their documentation, mention that with their support team when talking with them (rather than say it is a CPanel resposibility) or to include it by default so if server admin enabled it it will be attached and if not it will not affect their system.
Anyway I appreciate your effort and your great team for helping in this case, thank you so much :D