I have some user requests they like to link there zimbra calendar in the Google calendar.

I tried it with no success:

1. Share Calendar with external user. ( email and password)
2. Tray to connect the shared calendar in Google.

I think the url is the primary problem. how to set user name and password:


but the user name has a @ character witch is a problem. I tried it with a %40 as a replacement.

are there any hints or is it not possible?

cheers Manuel