Red Hat Knowledgebase

All of the command provided are required to run locally. We recommend that you back-up any files that you will edit, before editing them. For example, us the cp (copy) command to save an instance of the file before you edit:

cp /etc/mail/sendmail.mc /etc/mail/sendmail.mc.bak

To begin, first run:

service saslauthd status
service cyrus-imapd status
service sendmail status

To setup cyrus, leave /etc/imapd.conf as default from the RPM package. For /etc/cyrus.conf leave as default except for the following:

# UNIX sockets start with a slash and are put into /var/lib/imap/sockets
SERVICES {
# add or remove based on preferences 
imap          cmd="imapd" listen="imap" prefork=5
#  imaps                cmd="imapd -s" listen="imaps" prefork=1 
pop3          cmd="pop3d" listen="pop3" prefork=3 
#  pop3s                cmd="pop3d -s" listen="pop3s" prefork=1 
#  sieve                cmd="timsieved" listen="sieve" prefork=0 

# these are only necessary if receiving/exporting usenet via NNTP 
#  nntp         cmd="nntpd" listen="nntp" prefork=3 
#  nntps                cmd="nntpd -s" listen="nntps" prefork=1 

# at least one LMTP is required for delivery 
#  lmtp         cmd="lmtpd" listen="lmtp" prefork=0 
  lmtpunix      cmd="lmtpd" listen="/var/lib/imap/socket/lmtp" prefork=1 

# this is only necessary if using notifications 
#  notify       cmd="notifyd" listen="/var/lib/imap/socket/notify" proto="udp" prefork=1 
} 

Note: You will need imap even if you are not planning on running an imap server.

Next, set the password for cyrus:

passwd cyrus 

Set the saslauthd password:

saslpasswd -c cyrus  

su to the cyrus user and execute:

/usr/lib/cyrus-imapd/mkimap  

Add a user with both passwords:

useradd testuser 
saslpasswd -c testuser 

Now restart or start the services and turn them on to start at boot time:

service saslauthd restart  
service cyrus-imapd restart  
service sendmail restart  
service xinetd restart 
chkconfig saslauthd on 
chkconfig cyrus-imapd on 
chkconfig sendmail on 

You might need to reboot to allow cyrus to take ownership of the port.

Login in as cyrus to cyrus-imap:

cyradm --user cyrus localhost 

You can type help for more information. The prompt should also change:

localhost.localdomain> help 

Now make the users mailbox. Note the "user." must come before the username:

localhost.localdomain> cm user.testuser 

You can now exit:

localhost.localdomain> quit 

You can now test the user:

telnet localhost 110 
the login:
user testuser 
pass test 
You should see:
+OK Name is a valid mailbox
+OK Mailbox locked and ready

You now have cyrus working correctly. The mail box should show up:

 
/var/spool/imap/t/user/ 

You will now need to set Sendmail up to receive mail and send it to cyrus. Edit the configuration file /etc/mail/sendmail.mc and add this line to the bottom:

dnl MAILER(smtp)dnl
dnl MAILER(procmail)dnl
define(`confLOCAL_MAILER', `cyrus')
MAILER(`cyrus')

If you want Sendmail to be able to receive mail from other places then itself, change this line from:

DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

to

dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

Next, execute:

# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf 

You will then need to restart Sendmail:

service sendmail restart 

You can test, by doing:

# mail testuser@localhost 
Subject: test 
test
.
#make sure you put the “.” at the end of the email.

The mail should show up in: /var/spool/imap/t/user/testuser/ and you should be able to check it with any local POP3 client.