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7. Cyrus IMAP Configuration

7.1 Editing conf files

1. Edit /etc/syslog.conf and add the following lines at the bottom:

           local6.debug    /var/adm/imapd.log
           auth.debug      /var/adm/auth.log
   

2. Edit a new file /etc/imapd.conf and place in it the following lines:

           configdirectory: /var/imap
           partition-default: /var/spool/imap
           admins: cyrus root
           srvtab: /var/imap/srvtab
           allowanonymouslogin: no
           sasl_passwd_check: shadow
   

If you don't want your password check to be the default sasldb, you must specify which one of PAM, kerberos_v4, passwd, shadow you wish to use. If PAM is the authentication you desire for example, you would type:

sasl_passwd_check: pam

instead of the line above

7.2 Creating the necessary directories

This list of instructions will set up all the directories necessary for imap.

1. mkdir /var/adm
2. touch /var/adm/imapd.log /var/adm/auth.log
3. mkdir /var/imap /var/spool/imap /var/imap/srvtab
4. chown cyrus /var/imap /var/spool/imap /var/imap/srvtab
5. chgrp mail /var/imap /var/spool/imap /var/imap/srvtab
6. chmod 750 /var/imap /var/spool/imap /var/imap/srvtab
7. su cyrus

You are now the user cyrus. This is necessary for the files to have the correct owner and group. Continue:

1. tools/mkimap
2. cd /var/imap
3. chattr +S . user quota user/* quota/*
4. chattr +S /var/spool/imap
5. exit

You are now root again. The last command:

chattr +S /var/spool/mqueue

7.3 More configuration file editing

1. Edit /etc/services and check for the following lines. If they do not exist, add them:

           pop3    110/tcp
           imap    143/tcp
           imsp    406/tcp
           kpop    1109/tcp
           sieve   2000/tcp
   

2. Edit /etc/inetd.conf and comment out any imap and pop3 lines and add the following:

           imap    stream  tcp     nowait  cyrus   /usr/cyrus/bin/imapd    imapd
           pop3    stream  tcp     nowait  cyrus   /usr/cyrus/bin/pop3d    pop3d
   

3. Edit /etc/sendmail.mc with care not to add extra spaces and add the following lines(do not copy and paste directly from this text as the tabs won't be added correctly):

     MAILER(local)
     MAILER(cyrus)
     define(`confLOCAL_MAILER',`cyrus') 
     LOCAL_RULE_0
     R$=N                   $: $#local $: $1
     R$=N < @ $=w . >       $: $#local $: $1
     Rbb + $+ < @ $=w . >   $#cyrusbb $: $1
   

   Use tabs to separate the data (i.e. R$=N has three tabs between it and $: $#local $: $1) Then run: m4 sendmail.mc > sendmail.cf
4. Edit /etc/group and add the user daemon to the mail group.

7.4 If you use postfix instead of sendmail

Postfix is a mail-deliver alternative to sendmail. Most linux installations use sendmail by default. If you use postfix, ignore configuration #3 from the last section and uncomment or add the following line in /etc/postfix/master.cf

cyrus   unix    -       n       n       -       -       pipe    flags=R user=cyrus      argv=/usr/sbin/cyrdeliver -e -m ${extension} ${user}

Also add or uncomment this line in /etc/postfix/main.cf

local_transport = cyrus

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