possible spam

[darnez]

I am getting a bunch of messages sent from my server and cannot detect where it is occuring. Have I been hacked and any suggestion of eliminating. Below is a copy of what I am receiving back.

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

[email protected]
SMTP error from remote mail server after initial connection:
host mailserver2.domain.mb.ca [142.16.xx.xx]: 554-mailserver2.domain.mb.ca
554 Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.

------ This is a copy of the message, including all the headers. ------

 

[24x7server]

Hello,

I can see your mails has been rejected due to poor IP reputation. You will have to remove your mail server IP from all blacklist. You will get all blacklist status through Email Blacklist Check - See if your server is blacklisted. Also check your IP reputation through SenderBase

 

[cPanelMichael]

Hello

I recommend searching /var/log/exim_mainlog for the failed destination email address to see if you can get a better idea of where the message is sent from. EX:

exigrep [email protected] /var/log/exim_mainlog

Thank you.