IP 193.234.27.2 mail.secits.se Blacklisted: smtp hammering, no ptr, poor security or configuration, no abuse contact

lucifer@hell:~$ whois 193.234.27.2|grep abuse
% Abuse contact for ‘193.234.27.0 – 193.234.27.255’ is ‘abuse@secits.se‘
abuse-c: SECI1-RIPE

Blacklisted:

193.234.27.2/32

Reason:

smtp hammering, no ptr, poor security or configuration, no abuse contact

Evidence:

grep “193.234.27.2” /var/log/mail.log|grep -c RCPT 726

Dec 26 07:36:30 behemoth postfix/smtpd[32193]: NOQUEUE: reject: RCPT from unknown[193.234.27.2]: 450 4.7.1 Client host rejected: cannot find your hostname, [193.234.27.2]; from=<> to=<x> proto=ESMTP helo=<mail.secits.se>
Dec 26 07:37:50 behemoth postfix/smtpd[928]: NOQUEUE: reject: RCPT from unknown[193.234.27.2]: 554 5.7.1 <unknown[193.234.27.2]>: Client host rejected: blacklisted reason: NO PTR – unlist via https://abuse.privacy4all.org; from=<> to=<x> proto=ESMTP helo=<mail.secits.se>

Your message to abuse@secits.se couldn’t be delivered. abuse wasn’t found at secits.se. abuse Office 365 abuse Action Required Recipient Unknown To address

please fix your server first before removal request.

IP 193.234.27.2 mail.secits.se Blacklisted: smtp hammering, no ptr, poor security or configuration, no abuse contact