sending text to my cell phone using @tmomail.net no longer working?

I have a ticket open about this, and I will contact T and let them know about what you found.

skier522 wrote:

Looking at this more it would seem T-Mobiles email to sms server(s) have no IP information associated with the DNS record, so no way for mail servers to send to them. If it was working from some email clients that's because the DNS info probably hasn't yet aged out of their cache, but those clients will eventually stop working as well. 

This is why some clients are still working while others are not. This is basic Internet 101, it's a bit shocking no one at T-Mobile is aware of this issue! 

dig  tmomail.net @ns10.tmobileus.com

; <<>> DiG 9.18.12-0ubuntu0.22.04.2-Ubuntu <<>> tmomail.net @ns10.tmobileus.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60699
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;tmomail.net.                   IN      A

;; AUTHORITY SECTION:
tmomail.net.            900     IN      SOA     anppol31.gsm1900.org. arintechcontact.t-mobile.com. 2006060883 3600 600 3600000 86400

;; Query time: 204 msec
;; SERVER: 208.54.147.200#53(ns10.tmobileus.com) (UDP)
;; WHEN: Thu Jul 06 11:19:28 EDT 2023
;; MSG SIZE  rcvd: 124