Dovecot SASL support is available in Postfix 2.3 and later. On
the Postfix side you need to specify the location of the
Dovecot authentication daemon socket. We use a pathname relative
to the Postfix queue directory, so that it will work whether or not
Postfix runs chrooted:
/etc/postfix/
main.cf:
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
On the Dovecot side you also need to specify the Dovecot
authentication daemon socket. In this case we specify an
absolute pathname. In the example we assume that the
Postfix queue is under /var/spool/postfix/.
/some/where/dovecot.conf:
auth default {
mechanisms = plain login
passdb pam {
}
userdb passwd {
}
socket listen {
client {
path = /var/spool/postfix/private/auth
mode = 0660
user = postfix
group = postfix
}
}
}
See the Dovecot documentation for how to configure and operate
the Dovecot authentication server.
