Hi, all.

I achieved mailbox sharing with Dovecot & Roundcube webmail in iRedMail[1] today, just want to share you my experience, hope it helps. Although it's for iRedMail, but it doesn't depend on it.

http://www.iredmail.org/wiki/index.php?title=IRedMail/FAQ/Share.IMAP.Folder

It describes:

• How to enable mailbox sharing in Dovecot
• How to enable mailbox sharing in Roundcube webmail.
• How to test mailbox sharing with telnet

Requirements:

• Dovecot >= 1.2
• Roundcube webmail >= 0.5 -stable release

[1] iRedMail - Free, Open Source Email Server Solution: http://www.iredmail.org/