Hi guys, I think my server, which also has mail server to send out email recently has setout spam mail. This is because I saw the mail by: server.myservername.com and the email address is and the message said": this is f*** test! how could i fix this problem or find out if the server really get attacked?
a few things you didn't say postfix or what mail server SW ? do you have control of your mail server - dedicated / root server ? if for example you have postfix then you have all options to prevent abuse make sure your mail server is just for you and NOT for others see: Mail relay testing http://www.abuse.net/relay.html any mail relay should be disabled! - that's done in your config - if you have root server make sure authentication is required and only known senders are allowed to send via your SMTP study and make full use of all mail server config options - example postfix options http://www.postfix.org/postconf.5.html have a fully restrictive SPF record http://www.openspf.org/ postfix is easy to secure as long as you have only known people / email addresses from your own site/domain-name allowed to use your mail server