Can i find who the h3ll sends the spam?

Hello CWPers,
It is my 2nd VPS reseller with CWP which got at spam list, esp at SORBS. SORBS info do not give the spam email complete so I Can NOT find who sends these.

My email queue is clean right now except 2 corporate emails that wait to be resend to the recipients that use SORBS eg outlook.com etc

How can I move on with that situation? My php mail functions are all disabled. Please advise.

Disable Postfix temporarily, and let the queue build up, and look at what emails are going out, and from who.

How can I do that please?

Do this just until you find out who the spammer is.

Under Service Config -> Startup Services, scroll down and find 'postfix.service', to the right click on Disable.
Then from your Dashboard, click on 'Mail Services', the click on 'STOP' next to Postfix Mail Server.

This will stop the SMTP server, and should stop any mail going out.

I do not want to stop any SMTP service. I want to find the spammer.

How can I find that if stop any mail going out? 

You would only be stopping outgoing emails temporarily.
And can process the que after you find the spammer.

Otherwise you will have to sort thru the postfix logs.
You can find the Postfix logs at / var / log / maillog
(Remove the spaces to get into the folder, the forum blocks paths like this from being posted)

Thanks. Problem remains. I am forcing to move email accounts.