Cyrus IMAP HOWTO: Cyrus IMAP Configuration

Next Previous Contents

## 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`

Next Previous Contents