Managing Cyrus IMAP server - Cyrus system administration

Cyrus IMAP is a well-known POP3 and IMAP server. It can also serve as an MDA, or Mail Delivery Agent. This article covers commands for changing settings and troubleshooting. Before you begin

• Run every command except telnet as the cyrus user.
• cyradm manages mailboxes in cyrus-imapd.

Usage and commands

1. Reset the administrator password with:

   saslpasswd2 admin_user

   After changing the password, test it by connecting with telnet to port 143 and issuing login followed by the username and password, as shown:

   telnet mailserver 143
   Trying 192.168.1.1...
   Connected to mail0.intra.norang.ca.
   Escape character is '^]'.
   * OK mail Cyrus IMAP4 v2.1.17-IPv6-Debian-2.1.17-3 server ready
   . login admin_user password
   . OK User logged in

   Alternatively, use cyradm, which must be run as the cyrus user.

   cyradm --user admin_user localhost
   Password:

2. There are two ways to create mail accounts: Create a mailbox using telnet:

   . CREATE user.nick

   Create a mailbox using cyradm:

   mail.ezylinux.com> create user.nick

3. Delete a mailbox account using telnet:

   . DELETE user.alice

   Using cyradm:

   mail.ezylinux.com> dm user.alice

4. Recover a mailbox with:

   /usr/lib/cyrus-imapd/reconstruct -r  user.alice

5. Set a user quota using cyradm:

   mail.ezylinux.com> setquota user.alice 1024000

6. Fix an incorrectly displayed quota:

   /usr/lib/cyrus-imapd/quota -f

   /usr/lib/cyrus-imapd/quota -f user.alice

7. Fix SQUAT failed in the log:

   /usr/lib/cyrus/bin/squatter -r -v users/alice

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