Проблема с почтовым сервером Postfix

[tunsa]

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Прошу помощи

Есть почтовый сервер на ubuntu 10.04 + Postfix, всё работало как часы 6 лет, но недавно начались проблемы.
Письма стали приходят от самого себя или письма от адресов с непонятными названиями впереди моего домена.
Почтовый сервер у меня за натом. Где поправить, чтобы smtp работало с аутентификацией?

конфиг

Код: [Выделить]

# Generated by Zentyal
# See /usr/share/postfix/main.cf.dist for a commented, more complete version

# require helo
smtpd_delay_reject  = yes
smtpd_helo_required = yes

strict_rfc821_envelopes = yes
disable_vrfy_command = yes

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no

# appending .domain is the MUAs job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

myorigin = /etc/mailname
myhostname = mail
mydestination = $myorigin,$myhostname,localhost,localhost.$mydomain
smtp_helo_name = mail.test.ru
alias_maps = hash:/etc/aliases

alias_database = hash:/etc/aliases
local_recipient_maps = proxy:unix:passwd.byname $alias_maps

relayhost =


mynetworks = 127.0.0.0/8

message_size_limit = 41943040
mailbox_size_limit = 0
virtual_mailbox_limit = 0
recipient_delimiter = +
inet_interfaces = all

# Virtual Aliases
virtual_alias_maps = ldap:valiases
valiases_server_host = 127.0.0.1
valiases_search_base = ou=mailalias,ou=postfix,dc=zentyal2012
valiases_query_filter = (&(mail=%s)(objectClass=CourierMailAlias))
valiases_result_attribute = maildrop
aliases_bind = no

# Virtual Domains
dovecot_destination_recipient_limit = 1
virtual_transport = dovecot
#virtual_transport = virtual
virtual_mailbox_base = /var/vmail/
virtual_mailbox_maps= ldap:ldapvirtualmap

ldapvirtualmap_server_host = 127.0.0.1:389
ldapvirtualmap_bind = no
ldapvirtualmap_search_base = ou=Users,dc=zentyal2012
ldapvirtualmap_query_filter = (&(mail=%s)(!(quota=-1))(objectClass=CourierMailAccount))
ldapvirtualmap_result_attribute = mailbox

virtual_mailbox_domains = ldap:vmaildomains
vmaildomains_server_host = 127.0.0.1
vmaildomains_bind = no
vmaildomains_search_base =  ou=postfix,dc=zentyal2012
vmaildomains_query_filter = (|(&(objectclass=domain)(domainComponent=%s))(&(objectclass=CourierMailAlias)(mail=@%s)))
vmaildomains_result_attribute = dc, maildrop


virtual_minimum_uid = 100
virtual_uid_maps = static:108
virtual_gid_maps = static:114

# TLS/SSL
smtpd_use_tls = yes
smtpd_tls_note_starttls = yes
smtpd_tls_key_file  = /etc/postfix/sasl/postfix.pem
smtpd_tls_cert_file = /etc/postfix/sasl/postfix.pem
smtpd_tls_loglevel = 1

# recipient restrictions
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, check_helo_access pcre:/etc/postfix/helo_checks.pcre
submission_recipient_restrictions = reject_non_fqdn_sender, reject_non_fqdn_recipient, permit_sasl_authenticated, permit_mynetworks, reject
smtpd_restriction_classes = submission_recipient_restrictions

#SASL authentication
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain =
broken_sasl_auth_clients = yes
smtpd_tls_auth_only = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_local_domain =  $myorigin


content_filter=smtp-amavis:127.0.0.1:10024