On 2018-Jun-03 11:43, Wietse Venema wrote:
> To find out which processes have a connection to or from port 25,
> 
>     # lsof -Pi | grep :25 (must run as root to see all processes)
 
Thanks Wietse, actualy I needed to grep :587 as this is mail sent after
authentication and I got pid that I searched with ps command and got to
see full command including script responsible for mail sending. 

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