How to harden Exim on WHM/cPanel if you’re a victim of constant DoS attacks
Synopsis At times cPanel servers will be overwhelmed and connection counts will bust the 100 limit. Taking it up to 150 or 200 as per
exim
Post WHM/cPanel Transfer tool, there and back again, emails are being forwarded to old SMTP via proxy
The WHM transfer tool is incredibly powerful. It allows one to easily migrate a domain between two servers, with zero downtime and including DNS updates.
How to deal with WHM/cPanel Mail Hold Email holding in /etc directory
WHM brings up this message: This message was created automatically by mail delivery software. A message that you sent could not be delivered to one
Connection from [a.b.c.d]… refused: too many connections and Exim
At times your Exim server might be overwhelmed: 2023-11-09 12:04:05 Connection from [188.234.244.30]:3802 refused: too many connections Your server is most likely under attack. Check
How to monitor an Exim queue on a WHM server using SNMP and PRTG
Synopsis This article described types of queue monitoring you might want to do on an Exim server. Monitor the Exim queue length and pre-empt getting
How to manually change the outgoing IP address for email delivery on a WHM/cPanel Server
Background You might resort to changing your WHM server’s outgoing SMTP address as a last resort when your server’s IP address has been blacklisted. The
Fighting SPAM with Exim on WHM/cPanel
Background WHM/cPanel has the excellent MTA called Exim. The default settings are pretty good for keeping SPAM away, but every now and again a particularly