RCS domain lookup failure

Hi,

When using NextDNS with standard DNS, DoH or DoT I cannot lookup the RCS domain used by my mobile network -

mplus.ims.vodafone.com

I've tried whitelisting the domain, removing all blocklists and disabling cache boosting, CNAME flattening and anonymous EDNS to rule out interference. I've also tried a new configuration with the default settings. In all cases, NextDNS logs show no relevant blocked entries when performing these queries.

Response from NextDNS -

➜  dig ANY mplus.ims.vodafone.com
;; Warning: Message parser reports malformed message packet.

; <<>> DiG 9.10.6 <<>> ANY mplus.ims.vodafone.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOTIMP, id: 28473
;; flags: qr rd ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; WARNING: EDNS query returned status NOTIMP - retry with '+noedns'
;; WARNING: Message has 3 extra bytes at end
;; QUESTION SECTION:

➜  dig +noedns ANY mplus.ims.vodafone.com
;; Warning: Message parser reports malformed message packet.

; <<>> DiG 9.10.6 <<>> +noedns ANY mplus.ims.vodafone.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOTIMP, id: 10345
;; flags: qr rd ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; WARNING: Message has 3 extra bytes at end
;; QUESTION SECTION:

Response from Google DNS -

➜  dig @8.8.8.8 ANY mplus.ims.vodafone.com

; <<>> DiG 9.10.6 <<>> @8.8.8.8 ANY mplus.ims.vodafone.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32028
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;mplus.ims.vodafone.com.        IN    ANY
;; ANSWER SECTION:
mplus.ims.vodafone.com.    3600    IN    NAPTR    10 100 "S" "SIP+D2U" "" _sip._udp.mplus.ims.vodafone.com.
mplus.ims.vodafone.com.    3600    IN    NAPTR    10 100 "S" "SIP+D2T" "" _sip._tcp.mplus.ims.vodafone.com.
mplus.ims.vodafone.com.    3600    IN    NAPTR    10 100 "S" "SIPS+D2T" "" _sips._tcp.mplus.ims.vodafone.com.

Is there a workaround? This looks to be a bug in NextDNS.

Thanks.