Hi, I have configured backup mail server for our primary mail server. i am getting lot of spam with spoofed email ids from our domain. i noticed in header all these are accepting from backup mail server. primary mail server discarding spoofed mails.
#postcon -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 2 html_directory = no inet_interfaces = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost myhostname = mail2.my.domain.net newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.2.8/README_FILES relay_domains = $mydestination, ltp.soft.net relay_recipient_maps = hash:/etc/postfix/access sample_directory = /usr/share/doc/postfix-2.2.8/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination,check_sender_access hash:/etc/postfix/sender permit_mx_backup smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, check_sender_access hash:/etc/postfix/accesss, reject_non_fqdn_sender transport_maps = hash:/etc/postfix/transport unknown_local_recipient_reject_code = 550 Please suggest me to make any changes required. Regards, Ramesh.
