I see there has been a lot of issues with this, so if someone could add eyez-on.com to the list of unblocked it would be great. Years it worked fine and now i'm depending on my bell phone. tsk tsk
I used @msg.telus.com for some time, then it stopped working reliably (messages would come in groups hours later) , so I researched and switched to @msg.koodomobile.com and it worked great for a month then it stopped dead. I have tried sending txts to myself and it works fine via my home email. ( should mention I was on telus and switched to koodo some time ago for cell service)
Although im with a different alarm system, I've been having the same problem and my alarm company's messages have been going through and I tried sending myself texts via home email and that is working as well but just not receiving alarm company txts! must be stuck somewhere in the middle which is weird!