I’d like to expand on this for everyone with some more details we’ve gathered.
Over the last couple weeks we’ve been getting intermittent reports from our customers complaining that their users are unable to access various of our hosted customer sites from their phones. These reports all have some specific traits in common:
- they are using AT&T Wireless in the northeastern US (in particular Chicago, Pennsylvania and the east coast)
- everything works 100% when using WiFi (and not tethered to an AT&T Wireless data connection)
- they receive an SSL negotiation failure such as this when attempting to connect:
Note this particular error means they were able to connect to something… but it wasn’t us. We’ve attempted to perform some packet captures to diagnose the problem, but the packets during our test session did not make it to our servers.
We believe at this point that AT&T is doing some sort of SSL interference or tampering that is causing these errors. We would encourage any users experiencing this problem to open a ticket with AT&T as we are unable to do so.