>для начала покажите конфиг постфикса
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
mail_owner = postfix
myhostname = sl.sl
mydestination = localhost, $myhostname,
localhost.$mydomain
unknown_local_recipient_reject_code = 550
mynetworks_style = subnet
mynetworks = 127.0.0.0/8, 172.22.26.0/24
alias_maps = hash:/etc/postfix/aliases
mysql:/etc/postfix/mysql-aliases.cf
alias_database = hash:/etc/postfix/aliases
mailbox_transport = cyrus
fallback_transport =
smtpd_banner = $myhostname Postfix rules!
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
xxgdb $daemon_directory/$process_name $process_id & sleep 5
sendmail_path = /usr/sbin/sendmail
newaliases_path = /usr/bin/newaliases
mailq_path = /usr/bin/mailq
setgid_group = maildrop
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/packages/postfix/samples
readme_directory = no
allow_mail_to_commands = alias
message_size_limit = 10240000
bounce_size_limit = 65536
header_size_limit = 32768
allow_untrusted_routing = no
local_recipient_maps = $alias_maps
mysql:/etc/postfix/mysql-local.cf
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain =sl.sl
smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
smtpd_recipient_restrictions = permit_mynetworks,
hash:/etc/postfix/access,
permit_sasl_authenticated,
permit_auth_destination,
reject_unauth_destination
smtpd_client_restrictions = permit_mynetworks