Please in the future include all relevant data in you abuse notice. (src+dst ip are relevant!)
Thx.
Dear Abuse Team
The following abusive behavior from IP address under your constituency
188.165.221.36 has been detected:
2020-02-11 11:39:25 CET, 188.165.221.36, old decay: 86400, prob: 34.72%, SMTP auth dictionary attack
188.165.221.36 was caught 102 times since Fri May 18 01:42:13 2018
original data from the mail log:
2020-02-11 11:39:05 CET courieresmtpd: started,ip=[188.165.221.36],port=[58534]
2020-02-11 11:39:05 CET courieresmtpd: started,ip=[188.165.221.36],port=[62026]
2020-02-11 11:39:05 CET courieresmtpd: started,ip=[188.165.221.36],port=[63198]
2020-02-11 11:39:25 CET courieresmtpd: started,ip=[188.165.221.36],port=[58743]
2020-02-11 11:39:25 CET courieresmtpd: started,ip=[188.165.221.36],port=[50520]
2020-02-11 11:39:25 CET courieresmtpd: error,relay=188.165.221.36,port=58743,msg="535 Authentication failed.",cmd: AUTH LOGIN 42D117A2.9F10013D