I don't received email

[paradiseit]

I have this problem

(var/log/mail.err)
Apr 29 22:40:41 vhcs1 postfix/smtpd[25105]: fatal: no SASL authentication mechanisms

please can you give me the help
thanks

this is main.cf

#
# ispCP Ï (OMEGA) a Virtual Hosting Control System
#
# @copyright 2001-2006 by moleSoftware GmbH
# @copyright 2006-2008 by ispCP | http://isp-control.net
# @version SVN: $ID$
# @link http://isp-control.net
# @author ispCP Team
#
# @license
# This program is free software; you can redistribute it and/or modify it under
# the terms of the MPL General Public License as published by the Free Software
# Foundation; either version 1.1 of the License, or (at your option) any later
# version.
# You should have received a copy of the MPL Mozilla Public License along with
# this program; if not, write to the Open Source Initiative (OSI)
# http://opensource.org | osi@opensource.org
#
################################################################################​

# Postfix directory settings; These are critical for normal Postfix MTA functionallity
command_directory = /usr/sbin
daemon_directory = /usr/lib/postfix
program_directory = /usr/lib/postfix

# Some common configuration parameters
inet_interfaces = all
mynetworks_style = host

myhostname = vhcs1.paradiseit.com
mydomain = vhcs1.paradiseit.com
myorigin = $myhostname

smtpd_banner = $myhostname ESMTP ispCP 1.0.0 RC4 OMEGA Managed
setgid_group = postdrop

# Receiving messages parameters
mydestination = $myhostname, $mydomain
append_dot_mydomain = no
append_at_myorigin = yes
local_transport = local
virtual_transport = virtual
transport_maps = hash:/etc/postfix/ispcp/transport
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases

# Delivering local messages parameters
mail_spool_directory = /var/mail

# Mailboxquota
# => 0 for unlimited
# => 104857600 for 100 MB
mailbox_size_limit = 0
mailbox_command = procmail -a "$EXTENSION"

biff = no
recipient_delimiter = +

local_destination_recipient_limit = 1
local_recipient_maps = unix:passwd.byname $alias_database

# ispCP Autoresponder parameters
ispcp-arpl_destination_recipient_limit = 1

# Delivering virtual messages parameters
virtual_mailbox_base = /var/mail/virtual
virtual_mailbox_limit = 0

virtual_mailbox_domains = hash:/etc/postfix/ispcp/domains
virtual_mailbox_maps = hash:/etc/postfix/ispcp/mailboxes

virtual_alias_maps = hash:/etc/postfix/ispcp/aliases

virtual_minimum_uid = 1001
virtual_uid_maps = static:1001
virtual_gid_maps = static:8

# SASL paramters
smtpd_sasl_auth_enable = yes
smtpd_sasl2_auth_enable = yes
smtpd_sasl_security_options = noanonymous, noplaintext
smtpd_sasl_local_domain =
broken_sasl_auth_clients = yes

smtpd_helo_required = yes


smtpd_helo_restrictions = permit_mynetworks,
permit_sasl_authenticated,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname

smtpd_sender_restrictions = reject_non_fqdn_sender,
reject_unknown_sender_domain,
permit_mynetworks,
permit_sasl_authenticated

smtpd_recipient_restrictions = reject_non_fqdn_recipient,
reject_unknown_recipient_domain,
permit_mynetworks,
permit_sasl_authenticated,
reject_unauth_destination,
reject_unlisted_recipient,
check_policy_service inet:127.0.0.1:12525,
check_policy_service inet:127.0.0.1:60000,
permit

smtpd_data_restrictions = reject_multi_recipient_bounce,
reject_unauth_pipelining

# TLS parameters; activate, if avaible/used
#smtpd_use_tls = yes
#smtpd_tls_loglevel = 2
#smtpd_tls_cert_file = /etc/postfix/cert.pem
#smtpd_tls_key_file = /etc/postfix/privkey.pem
#smtpd_tls_auth_only = no
#smtpd_tls_received_header = yes

# AMaViS parameters; activate, if available/used
#content_filter = amavis:[127.0.0.1]:10024

# Quota support; activate, if available/used
#virtual_create_maildirsize = yes
#virtual_mailbox_extended = yes
#virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf
#virtual_mailbox_limit_override = yes
#virtual_maildir_limit_message = "The user you're trying to reach is over mailbox quota."
#virtual_overquota_bounce = yes