Hi all.
This one of the abuse emails that cries out to heaven.
There is an idiot who does not stop attacking us and does not answer the abuse email.
Someone knows what to do in this cases? RIPE said that is nothing to do because there is not a "return from their server" to our email.
This provider is full of spam, we banned all theirs ips. 
https://en.asytech.cn/check-ip/89.248.160.193
https://ipinfo.io/AS202425
It is very striking how a Seychelles provider with a new AS number can spam without limits.
Kind regards.
Javier

Sobre 12/02/2020 18:44:24, Alex de Joode <alex@idgara.nl> escribió:

Alessandro,

The abuse notification below, is absolutely terrible: it only highlights the OVH IP that was used, however it completely fails to identify the IP/hostname that was "attacked", no action (other than forward the notice to the user of the IP) can be taken.​

Please in the future include all relevant data in you abuse notice. (src+dst ip are relevant!)

Thx.
​-- 
IDGARA | Alex de Joode | alex@idgara.nl | +31651108221 | Skype:adejoode

On Wed, 12-02-2020 13h 16min, Alessandro Vesely <vesely@tana.it> wrote:

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