Someone is using my server (probably from insecure form) to send out mass spam email.
I had a look at
mailq but I cannot seem to find out where to look in order to solve this issue.
Is there a way to track down where these spam emails are coming from?
I'm using CentOS and Postfix
This is part of my main.cf file:
sendmail_path = /usr/sbin/sendmail.postfix # newaliases_path: The full pathname of the Postfix newaliases command. # This is the Sendmail-compatible command to build alias databases. # newaliases_path = /usr/bin/newaliases.postfix # mailq_path: The full pathname of the Postfix mailq command. This # is the Sendmail-compatible mail queue listing command. # mailq_path = /usr/bin/mailq.postfix # setgid_group: The group for mail submission and queue management # commands. This must be a group name with a numerical group ID that # is not shared with other accounts, not even with the Postfix account. # setgid_group = postdrop # html_directory: The location of the Postfix HTML documentation. # html_directory = no # manpage_directory: The location of the Postfix on-line manual pages. # manpage_directory = /usr/share/man # sample_directory: The location of the Postfix sample configuration files. # This parameter is obsolete as of Postfix 2.1. # sample_directory = /usr/share/doc/postfix-2.3.3/samples # readme_directory: The location of the Postfix README files. # readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES virtual_mailbox_domains = $virtual_mailbox_maps, hash:/var/spool/postfix/plesk/virtual_domains virtual_alias_maps = $virtual_maps, hash:/var/spool/postfix/plesk/virtual virtual_mailbox_maps = hash:/var/spool/postfix/plesk/vmailbox transport_maps = hash:/var/spool/postfix/plesk/transport smtpd_tls_cert_file = /etc/postfix/postfix_default.pem smtpd_tls_key_file = $smtpd_tls_cert_file smtpd_tls_security_level = may smtpd_use_tls = yes smtp_tls_security_level = may smtp_use_tls = no mynetworks = 127.0.0.0/8, 10.1.11.34/32 smtpd_sender_restrictions = check_sender_access hash:/var/spool/postfix/plesk/blacklists, permit_sasl_authenticated, check_client_access pcre:/var/spool/postfix/plesk/non_auth.re smtp_send_xforward_command = yes smtpd_authorized_xforward_hosts = 127.0.0.0/8 smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_mynetworks, check_client_access pcre:/var/spool/postfix/plesk/no_relay.re, reject_unauth_destination virtual_mailbox_base = /var/qmail/mailnames virtual_uid_maps = static:110 virtual_gid_maps = static:31 virtual_transport = plesk_virtual plesk_virtual_destination_recipient_limit = 1