Spam Flooding thru cPanel & SendGrid

sonuyos

• September 12, 2016 08:09

Hello, I have my cPanel set with Sendgrid. And It seems like someone hacked my SMTP server and set it to send spam, I found it as soon as it started but still 1k mail were sent. Now, I am a real cPanel noob, i did applied this in my WHM - prntscr.com/ch3fg5 And it seems to work, but am not sure. This is my standard mail details - prntscr.com/ch438t & This is the "hacked" mail details - prntscr.com/ch43u9 Is there anyway to fix it out? The setting i applied, are those sufficient?

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  cPanelMichael

  • September 21, 2016 14:19

  Hello, Denying access via the "Host Access Control" feature will prevent users on your system from utilizing those services. You could instead try some of the solutions documented at:

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  Serra

  • September 21, 2016 15:27

  Hello, And It seems like someone hacked my SMTP server and set it to send spam,

  
  It may just be your terminology, but I don't think they hacked your SMTP server. It is far more likely they gained access to an account, since the used an external IP though dovecot. As cPanelMichael said, you've basically broken your server and external sources (like Outlook) can no longer send mail. You should set email send limits in WHM to prevent massive email dump, as well as the other things on the link that cPanelMichael send you.

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