I was having difficulties sending some texts on my new Mac. Turned out I needed to check the settings on my iPhone. I also logged out of Messages, restarted the app and logged in again. So many little details to sort out when setting up from scratch.

@alans OK, check the settings on your phone for Messages Send & Receive and Text Message Forwarding. And try the Messages Prefs Logout, restart app, Log in and see if that helps at all. It was driving me nutty!

@Miraz Oh my gosh. Text Message Forwarding was off. I’ve had that feature on for years now. I did everything I could think of on the Mac, and it never occurred to me to find the setting on my phone when it stopped working. I have no idea how it was turned off.

Now I just need someone to send me an SMS. Thank you!!

@alans I found it was off for my new Mac and that was the problem. It never occurred to me to look there when I set up the new machine. A bit of a trap, eh!

@Miraz @alans I had a similar problem a few months back. I didn’t realize until someone said that they did not receive a message that I thought got through. Some settings seem to get reset when purchasing a new machine.

@crossingthethreshold @alans I’ve been setting up this machine from scratch rather than importing old data and settings. That probably contributed to my problem.

@Miraz OMG thank you! I set up a new (to me) MBP from scratch a couple of weeks ago and this was driving me nuts.

@Miraz and that’s just solved it for me as well! Thanks!