Hello folks, could someone please help me block a spammer email address using Postfix? The spammer uses his company name ("promovia") as part of the email address, and uses gmail and other free email accounts. So I think a good way to block this particular spammer is to block all emails that includes the word "promovia" as part of the email address. Can this be done in Postfix, or is there another solution? I already used ISPConfig to try to block the address using the spam blacklist: [email protected] [email protected] [email protected] [email protected] [email protected] But this is not working, I still get email from the blacklisted spam addresses, and the filter is ON in ISPConfig, so it is not a configuration issue. Bug in ISPConfig? Any help would be greatly appreciated.