Is someone trying to use my server for spam?
I've setup "The Perfect Server - Debian Lenny (Debian 5.0) With BIND & Dovecot [ISPConfig 3]" and everything is working fine.
I've setup one domain and using it for emails for my small company and eerything is working as expected.
I've just noticed a lot of the following warnings. is someone trying to use my server for spam? and how can I block things like these.
Oct 27 03:43:04 mail postfix/smtpd: warning: ppp-124-120-137-190.revip2.asianet.co.th[18.104.22.168]: SASL LOGIN
Thanks in advance