Only allow email from domain "x.y.z" from specifc IP's

[Dave Jones]

whitelist_auth *@x.y.z

Dave

On Wed, Jun 23, 2021, 8:38 AM Budi F <bfebrian at gmail.com> wrote:

> Hi,
> We uses MailScanner version 5.3.3, CentOS release 7.8.2003 and
> Postfix-2.10.1-9.
>
> We have another domain, called "x.y.z"  which is our sister company.
> Right now we put domain "x.y.z" into our whitelist, but it become a
> problem when we received many spoof emails claim from domain "x.y.z"
>
> Is it possible that we only allow email from domain "x.y.z" only from a
> specific IP address, and reject the rest?
>
> We can use SPF but that means we need to exclude domain "x.y.z" from our
> whitelist.
>
> Or if there any other way that we can receive only the valid email from
> domain "x.y.z" ?
>
> TIA
>
> Regards
>
>
>
>
>
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