On 6/10/2024 12:10 PM, Gilgongo via Postfix-users wrote:
On Mon, 10 Jun 2024 at 12:58, Matus UHLAR - fantomas via
Postfix-users <[email protected]
<mailto:[email protected]>> wrote:
3.
smtpd_recipient_restrictions = permit_mx_backup
avoid this whenever possible. Or at least define
permit_mx_backup_networks
Thanks - I forgot to ask about this. Am I right in saying that the
relay_domains configuration will take care of secondary MX relaying
(if that's what permit_mx_backup was originally for?), and I can
remove permit_mx_backup?
You should remove permit_mx_backup.
This feature is intended for ISP-scale users that may not have a
complete list of domains that use their server as a backup MX. In
this case, permit_mx_backup_networks would define the ISP's customer
network space.
-- Noel Jones
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