Forum Discussion
How to make users connect to Exchange online without Internet
I have some users in our office ,they can't access internet for some reasons. I have aleady add the Urls and IP address ranges for Office 365 to my firewall to allow users access. but when I create o...
This is a common problem if you are restricting access to the internet for your end users. Using names instead of IP addresses is recommended if your network equipment can do that. You may need to use a network trace to see what is being blocked and open that up. Microsoft do change the backend details on occasion, so you'll just need to keep an eye on this and make network changes as required.
I don't konw why some of users without internet can access Exchange Online via Outlook, but others cann't. Unless they access Exchange Online by different IP and URL? This is a very complex question!