There is a spam problem on my server. Because of this some RBL list my IP on the blacklist.
When i notice that i can not send mail to hotmail accounts, and read the error message, i realize that is aspam problem.
When i check my postfix mail queue, i saw some mail address that is not open my server, but the domain hosted on my server (for example mydomain.com hosted my server, but there is no firstname.lastname@example.org mail account in my mail accounts. But email@example.com send a lot of mail to a lot of different mail accounts.) sends a lot of spam mails. But in real there is no real mail account like this. Because of a lot these mail, my server is listed in blacklist now.
To solve this, how can i configure my postfix?
i add smtpd_client_restrictions: check_sender_access hash: /etc/postfix/virtual.db line to my postfix configuration file. But this gave an SMTP configuration error.
[file name=postfix_configuration.txt size=28101]http://www.virtualmin.com/components/com_fireboard/uploaded/files/postfix_configuration.txt[/file]