From Mandriva Community Wiki

This document applies to postfix-2.0.13, cyrus-sasl-2.1.15, cyrus-imapd-2.1.15 or greater for LM 9.2.

By default, Mandriva Postfix runs chroot jail. The following method allows users to config Postfix and Cyrus to run within chroot.

Setup Postfix to run LMTP over TCP socket

In /etc/postfix/main.cf add:

mailbox_transport = lmtp:$myhostname

Edit /etc/cyrus.conf and comment the line:

lmtpunix cmd="lmtpd" listen="/var/lib/cyrus/socket/lmtp" prefork=1

uncomment:

lmtp cmd="lmtpd" listen="lmtp" prefork=0

(change the number after "prefork" to suit your needs)

Create a user "cyruslmtp" with a valid (for Cyrus) password. Note: if you would like to authenticate via sasl for smtp auth, you could create the user "cyruslmtp" under cyrus-imapd.

Create a user in the system:

$ useradd cyruslmtp
$ passwd cyruslmtp

Create a user in cyrus-imapd

$ su cyrus
$ cyradm localhost
$ cm user.cyruslmtp
$ quit
$ exit
$ saslpasswd2 cyruslmtp

In /etc/imapd.conf add:

lmtp_admins: cyruslmtp

Create a file /etc/postfix/lmtp_sasl_pass owned by root and mode 600 containing the line:

<host where cyrus is running><TAB>cyruslmtp:<password for cyruslmtp>

Run:

   postmap /etc/postfix/lmtp_sasl_pass
   postconf -e "lmtp_sasl_auth_enable = yes"
   postconf -e "lmtp_sasl_password_maps = hash:/etc/postfix/lmtp_sasl_pass"
   postconf -e "lmtp_sasl_security_options = noanonymous"