Postfix relay denied

I have installed Cyberpanel with postfix installed
I am facing Relay Denied error while sending out the emails i.e.gmail.com or any other external
I have tried googling and read many posts but not able to get is work

I am using outlook as mail client and using smtp authentication while sending mails
If I send mail to the another domain hosted on this server. It goes fine

The main.cf is as under

command_directory = /usr/sbin
daemon_directory = /usr/lib/postfix/sbin
data_directory = /var/lib/postfix
mail_owner = postfix
inet_protocols = ipv4
mydestination = localhost, localhost.localdomain
unknown_local_recipient_reject_code = 550
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
debug_peer_level = 2
debugger_command =
         PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
         ddd $daemon_directory/$process_name $process_id & sleep 5

sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.10.1/samples
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES


myhostname = vmi1029709.contaboserver.net
mynetworks = 127.0.0.0/8
#ynetworks = 0.0.0.0/0, 127.0.0.0/8
message_size_limit = 30720000
virtual_alias_domains =
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf
virtual_mailbox_base = /home/vmail
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
broken_sasl_auth_clients = yes
smtpd_sasl_authenticated_header = yes
smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination

Log Error is as under

Oct  7 14:01:45 vmi1029709 postfix/master[262152]: daemon started -- version 3.4.13, configuration /etc/postfix
Oct  7 14:02:10 vmi1029709 postfix/smtpd[262160]: connect from unknown[182.191.133.112]
Oct  7 14:02:10 vmi1029709 postfix/smtpd[262160]: NOQUEUE: reject: RCPT from unknown[182.191.133.112]: 554 5.7.1 <rizwan65@gmail.com>: Relay access denied; from=<rizwan@progressngo.org> to=<rizwan65@gmail.com> proto=ESMTP helo=<RizwanPC>
Oct  7 14:02:14 vmi1029709 postfix/smtpd[262160]: disconnect from unknown[182.191.133.112] ehlo=1 mail=1 rcpt=0/1 quit=1 commands=3/4

Need help
Regards
Rizwan