One nice feature of cyrus IMAP is that it does support quotas. Quotas are applied on the basis of the mailbox and any sub-mailboxes that do not have quotas. This means that a mailbox can only have or be a part of one quota. When mail arrives the quota is checked to verify that the mail will not cause the quota to be exceeded, THE MAIL WILL STILL BE DELEVERED; however, the user will be notified  they are over the limit. If the mailbox is already over the ...

The default admin user is cyrus; however, an additional admin may be needed, or for some reason the default does not work a new admin can be created. Create an admin user name on the system with a password first.  cyrus is the default and will be created when cyrus IMAP is installed. However, a good password must be created, see the example. # passwd cyrus Changing password for user cyrus. New UNIX password: BAD PASSWORD: it is based on a ...

Basic Installation Install the two basic applications required, cyrus-imapd and cyrus-imapd-utils. You can either use the graphical tools to install or from the command line: yum install cyrus-imapd cyrus-imapd-utils (CentOS) apt-get install cyrus-imapd cyrus-impad-utils (Ubuntu) Start cyrus-imapd # service cyrus-imapd start Starting cyrus-imapd: preparing databases... done.         [  OK  ] (Suse and Ubuntu) /etc/init.d/cyrus-imapd ...