Hi All,
I'm not sure how to go about doing this (what I'm about to describe
below) so I'm hoping someone here can point me in the right direction.
My postfix box hosts multiple email domains, including one which is
fully internal to our network (ie does not receive nor send emails out
onto the Internet).
So we have external email domains: example.com, example.org
And we have our internal email domain: example.internal
Emails are permitted to be sent between all three domains.
Emails from example.com and example.org are permitted to
some_other_domain_on_the_internal.com, etc
Emails to example.org and example.com are permitted from the Internet
Emails to example.internal are not permitted and are (should be?)
impossible because there is no (external) DNS listing for example.internal
Emails from example.internal to the Internet should be forbidden - and
this is the part that I'm having trouble configuring.
Could someone please point me in the correct direction to accomplish
this - thanks
Cheers
Dulux-Oz
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