WHM/CPanel as a Backup Mail server

[albatroz]

Hello,
After upgrading my Cpanel/WHM VPS I have noticed this new option when creating a new account.
Does it mean that CPanel may work as an backup email server?
Has anybody tried it?

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Backup Mail Exchanger less »

Configure server as a backup mail exchanger. Mail will be held until a lower number mail exchanger is available.
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[cPanelDon]

Hello,
After upgrading my Cpanel/WHM VPS I have noticed this new option when creating a new account. Does it mean that CPanel may work as an backup email server? Has anybody tried it?

The option for backup (secondary) mail exchanger may be useful if you use a different ("primary") server to host e-mail accounts, as defined by the MX records in the DNS zone of the domain name.

For reference, it is possible to change or modify the domain-specific mail routing configuration via the following areas in cPanel/WHM:
cPanel: Main >> MX Entry (Documentation: MX Entry)
WHM: Main >> DNS Functions >> Edit DNS Zone (Documentation: Edit DNS Zone)
WHM: Main >> DNS Functions >> Edit MX Entry (Documentation: Edit MX Entry)