I figure this is a shot in the dark, but perhaps someone on here might have done this before, or may have an idea on how to implement this.
I am currently running SME 7.4 as our companies mail server. Users use mail clients to download their mail in the office over IMAPS while we also use Kronolith/Webmail for shared calendars etc.
We have 3 office locations with the physical server being hosted in a separate data centre.
What I have been asked to do is restrict access to Webmail to certain users when they are outside of the office.
One solution I can think of is to use apache to restrict access to certain IP addresses, but this does not really work so well when 'approved' users attempt to connect.
I cannot think of any other approach to this other than just turning off webmail altogether, which is not really an option.
Any ideas? I could potentially go with the apache approach but have no idea on how to configure a .htaccess for horde (I am familiar with apache, but always get wary when it comes to directly editing config files on SME).
Any thoughts are much appreciated.
Conor