Postfix richtig einstellen

[Wolf14]

Nachdem ich jetzt VHCS2 installiert habe funktioniert soweit alles. Nur die Emails wollen noch nicht. Ich kann zwar empfangen und auch an meine Email Adresse intern schicken, aber über andere Email-Adressen ist nichts zu empfangen.
Es müsste an den Einstellungen von Postfix liegen und dort ja eigentlich an der main.cf.

Meine main.cf

#
# Postfix MTA Manager Main Configuration File;
#
# Please do NOT edit this file manually;
#

#
# 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
mynetworks = 127.0.0.0/8, 192.168.44.0/24
myhostname = mail.tobias-boeing.net
mydomain = tobias-boeing.net.local
myorigin = $mydomain

smtpd_banner = $myhostname VHCS2 2.4 Spartacus Managed ESMTP 2.4.7.1
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/vhcs2/transport

#
# Delivering local messages parameters;
#

mail_spool_directory = /var/mail
mailbox_size_limit = 0
mailbox_command = procmail -a "$EXTENSION"

biff = no

alias_database = hash:/etc/aliases

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

#
# Delivering virtual messages parameters;
#

virtual_mailbox_base = /var/mail/virtual
virtual_mailbox_limit = 0

virtual_mailbox_domains = hash:/etc/postfix/vhcs2/domains
virtual_mailbox_maps = hash:/etc/postfix/vhcs2/mailboxes

virtual_alias_maps = hash:/etc/postfix/vhcs2/aliases

virtual_minimum_uid = 1000
virtual_uid_maps = static:1000
virtual_gid_maps = static:8

#
# SASL paramters;
#

smtpd_sasl_auth_enable = yes

smtpd_sasl_security_options = noanonymous

smtpd_sasl_local_domain = tobias-boeing.net

broken_sasl_auth_clients = yes

smtpd_recipient_restrictions =
   permit_sasl_authenticated,
   permit_mynetworks,
   reject_unauth_destination