Postfix sending spam, even if relay is closed

[moppentappers]

Hello,

My postfix is sending huge amounts of e-mail that I was forced to stop postfix.

Even if I set relaying to closed, disable message submission and disable sendmail spam is still being send..
Outgoing mail control reports nothing at all, and if I check my server with online tools to be sure it is not relaying everything is reported fine.

What on earth can I do to make this huge problem stop?!

 

[24x7serversupports]

Hello,

Have you checked /var/log/mail.log, it might give you some more details.

 

[abdi]

Disable the default PHP Mail function.

 

[trialotto]

@moppentappers,

It is important that you post some additional information, amongst others with respect to and/or related to the questions:

1. is the mail send from the server, OR a specific domain?
2. are there indications in the mail.log that a mail account has been hijacked?
3. are there indications in the auth.log that the server has been hacked?
4. is "spamming" still present, after shutdown of postfix?

and those are (for the time being) the most important questions.

Please provide some additional information, since in most cases one simple action can resolve the whole issue.

Kind regards....