We have a "roaming" user with tablet and phone using active sync to connect to an Exchange server in their office.
When travelling abroad, in come countries, neither the phone or tablet connects via active-sync to the Exchange server (connecting to a local hot-spot in that country).
In some countries the phone or tablet works fine.
As the user is miles away, it is very difficult to troubleshoot the problem hands-on.
Will appreciate some ideas as to what may be the cause of this particular issue.
Am I right to assume that only port 443 / internet access is required for the communication to be successful?
Apparently the internet is working just fine.