When my.postfix.com receives an email from an outside source, my.postfix.com tries to relay the cc and bcc receipients through their host domain
postfix/smtp to=<e...@someonelesesserver.com>, relay=mail.someonelesesserver.com[216.54.45.133]:25, delay=0.38, delays=0.01/0.05/0.14/0.18, dsn=5.0.0, status=bounced (host mail.someonelesesserver.com[216.54.45.133] said: 550 rejecting spoofed message (in reply to RCPT TO command)) Receiving a message: from z...@someoneelsesserver.com to x...@mypostfix.com cc y...@someonelesesserver.com The server will try to relay yyy using the someoneelsesserver.com and causing a bounce. How do I stop the resending of the cc and bcc sections of the message when the domain is not the one I am hosting. Version 2.6 Postfix using kolab version 3.0 Any help would be appreceiated Postfix main.cf readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES transport_maps = ldap:/etc/postfix/ldap/transport_maps.cf content_filter = smtp-amavis:[127.0.0.1]:10024 smtpd_tls_key_file = /etc/pki/tls/private/localhost.pem virtual_alias_maps = $alias_maps, ldap:/etc/postfix/ldap/virtual_alias_maps.cf, ldap:/etc/postfix/ldap/mailenabled_distgroups.cf, ldap:/etc/postfix/ldap/mailenabl$ submission_recipient_restrictions = check_policy_service unix:private/submission_policy, permit_sasl_authenticated, reject smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_pipelining, reject_rbl_client zen.spamhaus.org, reject_non_fqdn_recipient, reject_invalid_helo_hos$ smtpd_sender_restrictions = permit_mynetworks, check_policy_service unix:private/sender_policy_incoming # ejl 2012.11.27 smtpd_relay_restrictions = permit_mynetworks, reject smtpd_tls_auth_only = yes submission_sender_restrictions = reject_non_fqdn_sender, check_policy_service unix:private/submission_policy, permit_sasl_authenticated, reject local_recipient_maps = ldap:/etc/postfix/ldap/local_recipient_maps.cf submission_data_restrictions = check_policy_service unix:private/submission_policy smtpd_tls_cert_file = /etc/pki/tls/private/localhost.pem mynetworks_style = class Ed
