Hello, As you know, we receive many spams everyday. In case, we are sure that we want to block and reject ALL emails from a particular domain, for instance, example.com, what shall we do? I try to place example.com in the Global Filters Postfix blacklist, it seems that it can still pass. Can you share your experience? Also, does the content of the field follow Regular Expression rules?
That type of blacklist would match the envelope sender of an email, which is not the same as what shows in the "From:" header, are you sure the Sender is using @example.com? You can make sure you're using that blacklist by running 'postconf smtpd_sender_restrictions' - it should include 'check_sender_access proxy:mysql:/etc/postfix/mysql-virtual_sender.cf'. As to using regex, no, regex is not supported in the current mysql query. It performs a select for a table entry matching the address/domain.
Hi Till, Do you have to reload postfix after we have saved a new postfix blacklist or content filters inside ispconfig control panel?
