We want to learn when clients try to use AUTH LOGIN and friends so we
can block them more easily.
tls_advertise_hosts = *
smtp_enforce_sync = true
-log_selector = +tls_cipher +tls_peerdn +queue_time +deliver_time +smtp_connection +smtp_incomplete_transaction +smtp_confirmation
+log_selector = +tls_cipher +tls_peerdn +queue_time +deliver_time +smtp_connection +smtp_incomplete_transaction +smtp_confirmation +smtp_protocol_error
received_header_text = Received: ${if def:sender_rcvhost {from $sender_rcvhost\n\t}\
{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}\