Create Users
Create the users on the system. Create users with the false option so they cannot log into the server. This is an added security feature.

A. Create the User
useradd sue -s /bin/false
passwd sue
A common mistake is to forget to provide passwords for these users.

B. Use saslpasswd2 to create a cyrus account for the user.
echo linux23 | saslpasswd2 -p -c sue -p -u realm

Note that linux23 is the password that you are providing for this user sue.
The realm is the domain that you are using for the hostname. If you have no domain just use realm.

Here are several options for the saslpasswd2 program:
-p    pipe mode
-c    create
-d    delete
-u    domain
-f    file

C. List the users to verify they were created.
Use this command to list the users created with saslpasswd2.
List Users Example
Here is an example of the sasldblistusers2 command. Notice that there are two methods of authentication; PLAIN, and CRAM-MD5.

# /usr/sbin/sasldblistusers2
user: cyrus realm: example.org mech: CRAM-MD5
user: tom realm: realm mech: CRAM-MD5
user: cyrus realm: example.org mech: PLAIN
user: tom realm: realm mech: PLAIN
user: tom realm: realm mech: DIGEST-MD5
user: cyrus realm: example.org mech: DIGEST-MD5
You may also want to send an email to the account.
echo test |/usr/sbin/sendmail -f root username