I've been using the VTEXT service for awhile now to send texts to my wife from my Yahoo e-mail while I'm at work and can't have my phone on.  The last 2 days I've been able to receive text messages from her phone (Blackberry) and mine (Samsung SCH-U450) to my e-mail, but when I attempt to reply back or even just send an @vtext.com message to the phones, it comes back with a failure notice.  This has only been happening the last two days and I'm wondering if something has changed in the way the VTEXT service works.  Thoughts?