smtp - How to check if server is sending out spam?

Question

I checked my IP address today because I was getting bounced back emails and I see it has been blacklisted on a few lists. I only use my website to send out customer emails and no newsletter emails; so I don't send many emails out.

I don't know why my dedicated IP address would be blacklisted; is there a way to check my server running Plesk to see if someone is using my IP address to spam?

Thank you!

Answer 1

打印从您的服务器发送的所有电子邮件的目的地：

 cat  /var/log/maillog | grep  'to=<[a-z0-9_\.-]\+@[\da-z\.-]\+\.[a-z\.]\{2,6\}>' -o

Answer 2

检查邮件服务器上的传出日志，查看其中是否有您不认识的邮件。