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  1. Modify the rDNS for each IPv4 address to point to the desired domain.

    Warning
    titleImportant:


  2. Enable the Send mail from account's dedicated IP address option in WHM's Exim Configuration Manager interface ( Home >> Service Configuration >> Exim Configuration Manager ).

    Warning
    titleWarning:

    If you select this option, cPanel & WHM uses the /usr/local/cpanel/scripts/updateuserdomains script to automatically configure Exim, and overrides any manual changes in the following files:

      • /etc/mailhelo
      • /etc/mailips


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To use a custom Exim configuration, you must enable the following options in the Basic Editor section of WHM's Exim Configuration Manager interface (Home >> Service Configuration >> Exim Configuration Manager):

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Expand
titleClick to view IPv4 and IPv6 example


Code Block
languagebash
linenumberstrue
example.com: 192.168.0.2
sub.example.com: 192.168.0.2
example.net: 201:db8::2:1
addon.example.net: 201:db8::2:1
*: 192.168.0.1


Note
titleNotes:
  • In the example above, the system uses a double colon (::) to indicate a collapsed section. However, IPv6 addresses cannot contain more than one double colon. For more information, read our Guide to IPv6 documentation.
  • Only use valid, publicly-accessible IP addresses.
  • Do not separate multiple IP addresses with commas. Instead, use semi-colons.


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