Feb  5 21:41:56 firefly postfix/smtpd[3781]: connect from HOSTNAME[IP.ADDRESS]
Feb  5 21:41:56 firefly postfix/smtpd[3781]: warning: xsasl_cyrus_server_get_mechanism_list: no applicable SASL mechanisms
Feb  5 21:41:56 firefly postfix/smtpd[3781]: fatal: no SASL authentication mechanisms
Feb  5 21:41:57 firefly postfix/master[17550]: warning: process /usr/libexec/postfix/smtpd pid 3781 exit status 1
Feb  5 21:41:57 firefly postfix/master[17550]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
Feb  5 21:43:37 firefly postfix/anvil[3784]: statistics: max connection rate 1/60s for (smtp:IP.ADDRESS) at Feb  5 21:41:56
Feb  5 21:43:37 firefly postfix/anvil[3784]: statistics: max connection count 1 for (smtp:IP.ADDRESS) at Feb  5 21:41:56
Feb  5 21:43:37 firefly postfix/anvil[3784]: statistics: max cache size 1 at Feb  5 21:41:56