I have ISPconfig on suse 10.0.0 for some days I must disable the service SMTP because the server crashed for many many many smtp process and cpu go to 100%!! When I start again smtp I see immediatly many and many smtp process and the cpu go up so I must stop smtp What has happened? I must reinstall postfix? or? thanks
Many many many many many I think the problem is only spam On this server there is only 2 domains of 1 client and the mail server in on other server so I think to disable postfix at this moment How I do to disable postifix without remove it?
Just stop it. /etc/init.d/postfix stop You can empty your mailqueue with the command: postsuper -d all Then check how the spam massages had come into your mailqueue. There ae two common situations. 1) Your server is an open relay. Please psot your main.cf file, then we can check it. 2) You have an email script, form mail program or something like that, that is not programmed securely and is used by spammers.
The main.cf is too big for post and also as attachment is too big On the server there is mambo v. 4.5.2, now I am checking if there are some security patch for mambo
queue_directory = /var/spool/postfix command_directory = /usr/sbin daemon_directory = /usr/lib/postfix mail_owner = postfix unknown_local_recipient_reject_code = 550 debug_peer_level = 2 debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin xxgdb $daemon_directory/$process_name $process_id & sleep 5 sendmail_path = /usr/sbin/sendmail newaliases_path = /usr/bin/newaliases mailq_path = /usr/bin/mailq setgid_group = maildrop html_directory = /usr/share/doc/packages/postfix/html manpage_directory = /usr/share/man sample_directory = /usr/share/doc/packages/postfix/samples readme_directory = /usr/share/doc/packages/postfix/README_FILES inet_protocols = all biff = no mail_spool_directory = /var/mail canonical_maps = hash:/etc/postfix/canonical #virtual_maps = hash:/etc/postfix/virtual relocated_maps = hash:/etc/postfix/relocated transport_maps = hash:/etc/postfix/transport sender_canonical_maps = hash:/etc/postfix/sender_canonical masquerade_exceptions = root masquerade_classes = envelope_sender, header_sender, header_recipient myhostname = server1.$mydomain program_directory = /usr/lib/postfix inet_interfaces = all masquerade_domains = #mydestination = $myhostname, localhost.$mydomain defer_transports = disable_dns_lookups = no relayhost = mailbox_command = mailbox_transport = strict_8bitmime = no disable_mime_output_conversion = no smtpd_sender_restrictions = hash:/etc/postfix/access smtpd_client_restrictions = smtpd_helo_required = no smtpd_helo_restrictions = strict_rfc821_envelopes = no smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,check_relay_domains smtp_sasl_auth_enable = no smtpd_sasl_auth_enable = yes smtpd_use_tls = yes smtp_use_tls = yes alias_maps = hash:/etc/aliases mailbox_size_limit = 0 message_size_limit = 10240000 mydomain = giomi.it smtpd_sasl_local_domain = smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes smtpd_tls_auth_only = no smtp_tls_note_starttls_offer = yes smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom virtual_maps = hash:/etc/postfix/virtusertable mydestination = /etc/postfix/local-host-names
Anyway I want to thank you for your support, I think you are very helpful persons always present and this is a very useful community
Done! what is the use of this line? I have on other server with ispconfig on suse 10 (without mambo), do I need add this line also on main.cf of the other server?
This line assures that only localhost can send emails without authentication. If you send from another IP address, then you must authenticate. So your system shouldn't be abused by spammers anymore. It's a good idea to add this line to your other main.cf (if it isn't already in there).
