: Sending massive volumes of unsolicited emails.
: Reusing passwords leaked from other data breaches. Cracked SMTP.txt
If you believe your server has been compromised, you should , review your server logs for unauthorized access, and check if your IP address has been added to any global RBLs (Real-time Blackhole Lists) . : Sending massive volumes of unsolicited emails
An SMTP server is responsible for sending emails. A "cracked" list contains login details—usually a —that have been stolen through: Cracked SMTP.txt
: Organizations may be held responsible for the malicious traffic originating from their infrastructure. How to Protect Your SMTP Server
: Using automated software to guess common passwords.