Dear friends, We have Postfix ver2.3.3 on RHEL5, which was working fine for several years. Please find below the output of postconf -n
alIias_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 mailbox_size_limit = 0 mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man message_size_limit = 10240000 mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mydomain = xyz.gr myhostname = mail.xyz.gr mynetworks = 192.168.0.0/16, 10.0.0.0/8, 127.0.0.0/8 myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES sample_directory = /usr/share/doc/postfix-2.3.3/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, che ck_relay_domains smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = $myhostname smtpd_sasl_security_options = noanonymous smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/sender_access, reject_unknown_sender_domain unknown_local_recipient_reject_code = 550 During the last days we face huge problem by spam emails, as if our server is open relay. For example, the majority of spam emails in the mail queue show as sender: meng.e...@gmail.com<mailto:meng.e...@gmail.com> 1) how can I find out from which IP address do these emails come from? 2) I tried to reject mail from and to meng.e...@gmail.com<mailto:meng.e...@gmail.com> without sucess. More specifically, I created sender_access and recipient_access with meng.e...@gmail.com<mailto:meng.e...@gmail.com> REJECT Could you please inform me what is wrong and there are still emails by mend.e...@gmail.com<mailto:mend.e...@gmail.com> ? Best Regards, Nikos
