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This video will show you how you can limit the client versions that can connect to RightFax 16.2 or 16.4 servers.

RightFax 16 EP2 introduced a new feature to restrict or limit the version of FaxUtil that can connect to a RightFax server. This feature is called “Minimum Client Version”.

Some of you may already know that when RightFax 10.6 FP3 was introduced, many clients that weren’t yet updated after the server was at FP3 experienced a loss of functionality for some features. Ultimately, the fix for this is to update the clients to operate at the same level as the RightFax server. But what if you want to completely restrict a client from a previous RightFax major release from connecting to the RightFax server?

You can configure this in RightFax 16 EP2 or 16 EP4 by doing the following.

On the RightFax server, open Enterprise Fax Manager. On the left side-pane, click on services. To the right, locate and right-click on the RightFax Server Module and choose “Configure Service”. Once the Server Configuration window opens, click on the “User Messages” tab. You’ll see the “Minimum Client Version” setting here in the “Client Access” section. On a RightFax 16 EP2 Server, your choices here will be 10.5, 10.6 and 16 EP2. On a RightFax 16 EP4 Server, the choices will be the same, 10.5 10.6 and 16 EP2

The Install Guide for RightFax 16.4 states that the following client/server combinations are supported but will result in a loss of new functionality:
16 EP4 server software with 16 EP2, 10.6, 10.5, and 10.0 client software.
The Install Guide for RightFax 16.2 states that the following client/server combinations are supported but will result in a loss of new functionality:
16 EP2 servers with 10.6, 10.5, and 10.0 clients
On my RightFax 16.4 server, I currently have the default option of "None" set for the "Minimum client version". You'll note that my RightFax server's name is "Hera".

Now, let's go to my client PC. Here we have a Windows 10 PC that has FaxUtil 10.6 FP3 SR7 installed.
You'll notice that the RightFax Server I'm connected to is "Hera", which is my RightFax 16 EP4 server I previously showed you.
Let's go back to my RightFax server and we will now change the "Minimum client version" setting to "16 EP2". If we go back to my Windows 10 client PC and close and then re-launch FaxUtil, you'll see that we get a message stating "The requested version is not supported."
One thing of note that came up in our testing but is not included in the documentation on this feature. RightFax accounts that have been granted Administrator rights are exempt from this setting being enabled. If I log on to my Windows 10 client PC with my account (which also happens to be a RightFax Admin) and then launch FaxUtil, you'll notice that I do not get the message stating "The requested version is not supported."

Please remember that "best practice" is to have your FaxUtil clients match the version (and update level) of the RightFax Server. This will prevent any possible loss of functionality to your users that can come from mixing client and server versions.