web/imap access only from trusted networks

[janci]

Hi,

is there any way to set mail access for selected users (whole web/IMAP/POP) only from trusted subnets? The point is that not all our employees are allowed to use webmail from outside the company. Ideally, it would be nice to set such a thing in COS schema, but anything usable is a good solution .

I've found in other thread (disable webmail access to particular user/domain):

I could see a simple filter field being added in the Zimbra Admin Console under a user to list the network(s) that they could access from - ie 0.0.0.0 for no access, 192.168.0.0/xx for the local subnet or xxx.xxx.xxx.xxx/yy for external/remote site access.

So the question is: how to do it?

Thanks.