is there a way to block or rate limit compromised sasl senders ? postconf -d | grep mail_version mail_version = 2.11.0
grep limit main.cf recipient_delimiter = + message_size_limit = 20971520 dovecot_destination_recipient_limit = 1 smtpd_client_connection_rate_limit = 50 grep sasl_username=sale...@example.com.au /var/log/maillog | wc 6374 57366 902481 ... Oct 27 22:11:42 emu postfix/smtpd[20784]: 391BF24ECEA: client=unknown[81.196.92.93], sasl_method=PLAIN, sasl_username=sale...@example.com.au Oct 27 22:11:45 emu postfix/smtpd[20732]: 10A0924EC8B: client=unknown[81.196.92.93], sasl_method=PLAIN, sasl_username=sale...@example.com.au Oct 27 22:11:45 emu postfix/smtpd[20784]: DC94D24ECDE: client=unknown[81.196.92.93], sasl_method=PLAIN, sasl_username=sale...@example.com.au Oct 27 22:11:58 emu postfix/smtpd[20732]: D34C524ECDE: client=unknown[81.196.92.93], sasl_method=PLAIN, sasl_username=sale...@example.com.au Oct 27 22:12:02 emu postfix/smtpd[20732]: 9256D24EC8B: client=unknown[81.196.92.93], sasl_method=PLAIN, sasl_username=sale...@example.com.au Oct 27 22:12:06 emu postfix/smtpd[20732]: 52CC324ECEA: client=unknown[81.196.92.93], sasl_method=PLAIN, sasl_username=sale...@example.com.au Oct 27 22:12:10 emu postfix/smtpd[20732]: 15BB924ECED: client=unknown[81.196.92.93], sasl_method=PLAIN, sasl_username=sale...@example.com.au
