I was wondering...

>>> smtpd_banner = Infracom Mail Server
>>>
>> Don't change this unless you have a really good reason.
>> Some functionality can be lost by those connecting to you and the
>> current line breaks the SMTP standard.
> Ok, thx I'll revert this to the default then ;-)
>
>> There are "open relay" test websites you can verify this at.
> The mail server isn't public currently, but thx for the reminder :-)
>
>> Postfix, by default, only queues mail that is destined for that system
>> (mydestination or virtual settings), included in mynetworks, or listed
>> in relay_domains
>> This only changes if *you* tell Postfix not to. The config below does
>> not show any such weakness.
> Hmmm, so basically there is no way to enforce that mail sent through
> the mail server will always be either from or to one of my domains :-(

Would it be possible to use sender verification to match negatively?
That way I could run two instances of postfix and have one check
sender and the other recipient
If it comes from the internal interface at lease sender should be local
if it comes from the external interface at least recipient should be local

Not sure if this is possible, but it would definitely solve it, at least I think

Regards,

Serge Fonville

-- 
http://www.sergefonville.nl

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