Alex:
> Hi,
>
> I'm using postfix-3.5.10 and would like to use it to front-end a
> domain currently being managed by Google Workspace to be able to send
> mail through our filters first.
Is this for
- Email from "users inside the domain" to Google Workspace? This
is like a relayhost for authenticated users, configured to
forward email for its domain to Google Workspace, and to send
other email directly.
- Email from "users in other domains" to Google Workspace? There
is no user authentication here, and the Postfix server has to
figure out what addresses are valid. This is like a primary MX
that forwards email for its domain a backend service (in this
case Google).
Both can be implemented with the same Postfix configuration.
Wietse
> I know I'll need to redirect the MX, but how do I obtain a user list
> so I'm not just forwarding all email received for the domain through
> as a relay, and instead only to those users with current accounts?
>
> In the past, I believe it was using LDAP, but perhaps that's changed
> now? All references I currently see are using SASL and require the
> username/password combination of the user accounts.
>
> Any guidance on how best to do this would be appreciated.
> Thanks,
> Alex
>
