dictionary attacks check

[Per olof Ljungmark]

On 9/26/18 3:53 PM, David Banning wrote:
> I just got an email bounce - reason;
> 
> The sending IP (162.213.106.199) is listed on https://spamrl.com as a source of dictionary attacks.
> 
> The first thing I did was run a check on mxmailbox.com which shows my server as clean from all sites checked.
> I wonder what the best way is of checking my system to see if it is commiting these dictionary attacks.
> 
> My system it somewhat older;
> 
> FreeBSD 3s1.com 9.3-RELEASE FreeBSD 9.3-RELEASE #0
> 
> Any pointers would be helpful.

Check your logs would be a good start.