[root@lion var]# testsaslauthd -u emi -p 1
0: NO "authentication failed"
[root@lion var]# testsaslauthd -u emi@purplepaw.co.uk -p 1
0: NO "authentication failed"
[root@lion var]# postconf  -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
html_directory = no
inet_interfaces = localhost
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.1.5/README_FILES
sample_directory = /usr/share/doc/postfix-2.1.5/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_recipient_restrictions = permit_mynetworks,  permit_sasl_authenticated,  reject_non_fqdn_hostname,  reject_non_fqdn_sender,  reject_non_fqdn_recipient,  reject_unauth_destination,  reject_unauth_pipelining,  reject_invalid_hostname
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_security_options = noanonymous
unknown_local_recipient_reject_code = 550
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:1002
virtual_mailbox_base = /var/mail
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 100
virtual_transport = virtual
virtual_uid_maps = static:1002broken_sasl_auth_clients = yes