Email to SMS Problems

I have been attempting to get this resolved with Customer Service for over a month now with no results.

At work, my Outlook email is the only way I can text my family, email to text. It does not work.

It Will work if I message someone on another carrier such as Verizon. It will also work if I use my Gmail account, which I don't have access to at work.

Anyone have an idea why I can't send an sms to the other phones on my plan from Outlook?

You will need to cal lthem and tell to allow short codes on your number.  It seems like every 6-18 months they disable that feature and you have to have it renabled- Takes 2 minutes.  The issue is you don’t know when they are going to disable it.

I’m having a similar issue. When my job sends out mass emails about shifts, I never receive them at all. I spoke with a Tmobile Expert and I got a ticket number to resolve the issue . The issue is still continuing.

Mine is being blocked as well.

I've been in touch with Barracuda Networks and the problem is a malformed date/device ID in the E-Mail. I CAN ask/request T-Mobile to white list my device, as it HAS works for the last year or so I've been with them (bad  choice in carriers), but I'm quite sure they'd have absolutely no idea how to do that.

This started NOT working about 3 months ago.

I think there might be/have been an outage in this system today. I have a forwarder set up from my Gmail to my text email for some important subjects. Today I have received bounces on those forwarders.

It is odd that TMobile does not support subscriber whitelisting the source of email to SMS messages.  If your generic SPAM filters false positive identify my messages as SPAM, I should be able to control what I'd like to receive.

TMobile is now blocking my video surveillance notifications.  This is simply denial of service.

Fix it!

I found out it was blocking my messages when it detects the same subject line every time you send your bulk messages. I guess it thinks its a spam when you send messages to many users with the same subject line.  I send my messages every week, so I change the subject line every week.  Just change the subject line after every bulk message you send. 

Was a way to get this working found?  I'm also trying to send text messages for a Scouting event and text messages to my own phone number are blocked.  My code is working fine for texting a Verizon user.

No

t mo support told me that t mobile will be getting away from all Email to SMS as it is " OLD TECH"

The issue is with T-Mobile and not Barracuda Networks.  I own a text marketing company that sends over 500,000 messages per day in which 100,000 alone are to T-Mobile subscribers. Forcing MMS by creating a message longer than 160, setting the content type to "html/plain" or even including an image will only prevent T-Mobile from "repackaging" your message to a temp short-code for delivery. This will not stop the 550 permanent error. Even if you have the correct SPF, DKIM, PTR (rDNS), SMTP Banner and any extra SMTP IP A records set to your mail server, the failure will continue. What is happening is T-Mobile's SPAM filter (not Barracuda) is seeing your messages as SPAM, if you are using the same subject every time and delivering to just 100 @tmomail.net.net subscribers every 24 hours, you can be blocked permanently.  We resolved our issue by purchasing another TLD (domain) and sending mail through that channel. It was actually a good move because all of our clients access the platform/website through "example.com" but all the mail is delivered through "example-mail.com" but both domains have the same hostname/mail server name of mail.example.com. Hope this helps anyone who has had issues. Remember to use MXToolBox or DNS Stuff to check your IPs, mail server, domain, blacklist, SPF, DKIM, PTR and other records for accuracy.  For those sending a lot of messages per day it's advised you use round-robin IP sending if you have more than 1 IP on your server as well as configuring EXIM in all areas on your server both GUI and command.