Hi My smtp server (postfix) was receiving a lot of mails with empty senders ("mail from:<>"), and it sends them as they was from "[EMAIL PROTECTED]". I want to change this behaviour, so I added to main.cf the line
'smtpd_sender_restrictions = reject_non_fqdn_sender' thinking that "<>" is not a fqdn. But after that, postfix still sends them. So I added 'smtpd_sender_restrictions = reject_non_fqdn_sender, reject_unknown_sender_domain' but this way I get the same response: helo k 250 mydomain.com mail from:<> 250 Ok rcpt to:[EMAIL PROTECTED] 250 Ok data 354 End data with <CR><LF>.<CR><LF> fds fdsfsf fdsfs