SMS-related issue with MFA codes

[Frank86]

We are using 3CX Enterprise hosted (by 3CX) with Flowroute as our SIP trunk. We set up SMS/MMS in both 3CX and Flowroute a few months ago, and all was working well.
We have recently noticed (in the last month or so) that our 3CX DIDs can receive SMS messages from private individuals, but SMS messages sent for MFA authentication do not get delivered.
Has anyone else experienced this problem?
Any recommended troubleshooting tips?
Thanks.

 

[tbwg]

We are using 3CX Enterprise hosted (by 3CX) with Flowroute as our SIP trunk. We set up SMS/MMS in both 3CX and Flowroute a few months ago, and all was working well.
We have recently noticed (in the last month or so) that our 3CX DIDs can receive SMS messages from private individuals, but SMS messages sent for MFA authentication do not get delivered.
Has anyone else experienced this problem?
Any recommended troubleshooting tips?
Thanks.

I am having this same exact problem. One thing I noticed in Flowroute today is that none of the MFA messages are even showing up in Flowroutes messaging stats. This might just be something to do with flowroute.

 

[Evolute IT]

First of, SMS 2FA should not be used unless there's absolutely no other way. It's not secure at all.

Secondly, 2FA codes on VoIP numbers is always a hit-or-miss. It might work, and it might not. That's not a 3CX thing, that's just the provider.

Also, many sites literally block VoIP numbers so even if you try to send a 2FA to one, it will either give an error or it will simply never come.

It's common with most providers.

 

[tbwg]

A Flowroute Engineer confirmed that they do not currently support shortcodes. No ETA on if/when they will add it.