FYI, I got this email for a non-exit relay - please share if you get them as well:
To Whom it May Concern,
You have a system on your network that is actively scanning and/or attacking external sites on the Internet. This can come from many sources and because it is often difficult to detect this activity, we are sending this E-mail in an attempt to help you solve the problem.
We have detected your system with an IP of, <relay-IP>, scanning a client we monitor. This was not a short attack but a prolonged scan and/or probe that was designed to find and intrude into the target network.
This may be someone on your network who is actively trying to hack others. This person may be a legitimate user on your network or it may be that this system has been compromised and is being used by someone to hack others. It is also likely that the system is running automated tools that have been installed to perform these actions without any human intervention.
Below is the information about the attack. Keep in mind that the source IP of our client has been sanitized for anonymity.
Date: 09/XX/2017 Time Zone: America/Chicago Source(s): relay-IP Type of Attack/Scan: Generic Hosts: <RFC1918 IP address> Log:
relay-IP:ORPort > RFC1918 IP address
Possible Cause:
Thank you for your attention to this matter,
Masergy email: esp@masergy.com mailto:esp@masergy.com
---------------