Google Voice seems to be having some issues with sending SMS messages today, as a number of blogs reported earlier yesterday morning. The Google Voice customer support forums are filling up with complaints about text messages being sent from different phone numbers than the ones they should originate from. For some users, these numbers change every time they send a new text message, which makes it rather hard for the recipients to figure out who is trying to text them and so responses never arrive (or they go to unsuspecting users who are now confused about who is trying to text them).
Update: Google says the issue has been fixed.
Google Voice experienced an issue displaying the incorrect caller ID for outbound SMS. The issue should now be resolved. We apologize for any inconvenience caused.
It’s currently unclear how many Google Voice users are affected by this issue (in my own tests, everything worked just fine), but there is clearly something going on there. It’s worth noting that it doesn’t look as if the regular Google Voice phone system is affected by this bug.