In the past few have had an issue with clients having mail scripts setup on their hosting, which at first sent out batches of 4000-5000 emails a day.
We have since removed the scripts, however our server IP has now been blocked from Hotmail/Outlook.
What I'm asking here is kind of a double question. Firstly what is the most effective way in cPanel to restrict outgoing email, so that if someone does install a mailer script like that again, mass emails can be automatically barred/bounced?
Also, does anyone have any advice on the best way of getting 'unblocked'? I've been contacting Hotmail Sender Support and am following their advice, however unfortunately non of it is an instant fix.
To limit mass emails, use "Max hourly emails per domain" in tweak settings. Also it is recommended to install ConfigServer's exploit scanner ( paid ) or maldet ( free ) and verify its results to find abusive scripts in accounts.