The message store is used to store mail folders. The Cyrus
message store provides access to personal mail through the Internet
Message Access Protocol (IMAP4) and Post Office Protocol (POP) via
its IMAP and POP server. IMAP and POP servers are key
components that allow email clients to connect to the server and
fetch mail. The Cyrus server differs from other message store and
IMAP server implementations in that it is run on "sealed" servers,
where users are not normally permitted to log in. The Cyrus server queries the LDAP directory for
authentication of users using the pam_ldap interface on Caldera OpenLinux. The Cyrus message store
is stored in parts of the filesystem that are private to the Cyrus
system and all user access to mail is only through clients using the
IMAP and POP3 protocols. This means that Messaging Server mailboxes are not compatible with traditional UNIX or Linux
flat file mailbox format and you will not be able to access them
using mailx or any other client that does not support IMAP or POP.
However, the Cyrus database mailbox format provides a message store
which is much more scalable than the traditional flat file format.
Also, users are
able to access their mail from command line utilities, but they will have to
use the fetchmail utility to do so. |