hmmm it looks fine to me:
dig @ns7.zoneedit.com txt resolvegroupuk.com
; <<>> DiG 9.8.3-P1 <<>> @ns7.zoneedit.com txt resolvegroupuk.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26490
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;resolvegroupuk.com. IN TXT
;; ANSWER SECTION:
resolvegroupuk.com. 7200 IN TXT "v=spf1 include:mailgun.org ~all"
g @ns7.zoneedit.com txt smtp._domainkey.resolvegroupuk.com
; <<>> DiG 9.8.3-P1 <<>> @ns7.zoneedit.com txt smtp._domainkey.resolvegroupuk.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53911
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;smtp._domainkey.resolvegroupuk.com. IN TXT
;; ANSWER SECTION:
smtp._domainkey.resolvegroupuk.com. 7200 IN TXT "k=rsa\; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDRpEcJeJ8f4/SWzMyNC2NZxUDPpfdc9wA7N2KW4qlsy/wb3YitE/4PeUg6+Nq+cLtre3foPvl0UNCArOCxo6NVvqy5y0ojpMDR8BxYpVGVaYo/VSW3lyAxfTr9xMD7hLRw1ejHK/pY9oS56cwrpsRUMU5Luhj65gxPIIstyEmfWQIDAQAB"
dig @ns14.zoneedit.com cname email.resolvegroupuk.com
; <<>> DiG 9.8.3-P1 <<>> @ns14.zoneedit.com cname email.resolvegroupuk.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15663
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;email.resolvegroupuk.com. IN CNAME
;; ANSWER SECTION:
email.resolvegroupuk.com. 7200 IN CNAME mailgun.org.
how are you doing your lookups?
thanks
sandy