A common problem for some hosting managers nowadays is related to misconfigurations around IPv6, causing problems, for example, sending emails to Google.

cpanel exim settingsCPANEL/WHM is no exception in some cases to this. But there is a way to disable (and it is simple) IPv6 from your EXIM server:

 

 

 

 

STEP 1

Select WHM Home –> Service Configuration –> Exim Configuration Manager –> Choose tab Advanced Editor

 

STEP 2

Scroll until you see the option “Add additional configuration setting”.

STEP 3

Select the following option from the drop-down menu:

disable_ipv6

STEP 4

Set the value to:

true

 

STEP 5

 

Scroll down to the end of the screen and click on:

Save

 

Your server will now only use IPv4 to send emails and most likely all your issues around IPv6 will be mitigated.