I have a client that is running the latest version of Zimbra 8. They share a few breifcase folders with non-zimbra users. After about 3 months it appears that there is some sort of timeout and the share is revoked. Is there any way to eliminate this? I know its not ideal and probably a security risk, but as a paying customer its my job to give them what they want after I give them solid advice.

any ideas?

If you need more information just let me know.
Thanks