by brian on October 31, 2011
Nolisting is a spam-avoidance scheme which tricks the spammers into giving up when trying to send us spam. It can result in 50-60% spam reduction on heavily spammed domains and does not use any server load as the spammers don’t even get to connect. [ The 60% figure was measured in 2008 but the technique is expected to be less effective these days (2011).]
More specifically, nolisting tricks the spammers into talking to IPs that ignore traffic, whereas normal mailers go on to talk to the real mail system. [click to continue…]
by Reed on August 18, 2011
If you’re using WHMCS to manage your cPanel shared servers, this is probably a request that you’ve received a few times. You have clients that are set up to pay invoices automatically from their credit cards, and they’d rather not receive the “Invoice Created” or “Invoice Payment Reminder” emails every month.
Normally WHMCS only allows you to disable these emails globally but, by making use of the EmailPreSend action hook, we can set up a list of clients not to receive these.
To get started just download the following script, change the file extension to .php, edit it to set up the $client_ids and place it in your WHMCS /includes/hooks/ directory
Please note, this script doesn’t disable only the automatically sent invoice notification emails, but also blocks manual sending of these for the selected clients.
Download disable_invoice_notification.php 