handling unknown recipients

[Tilman Schmidt]

On 28.04.2016 03:42, @lbutlr wrote:
> On Apr 26, 2016, at 8:07 AM, Tilman Schmidt <tschmidt at cardtech.de> wrote:
>> Running Postfix with amavisd-new and quarantining attachments seems to
>> produce an unfortunate interaction when mail with a banned attachment
>> arrives for an unknown recipient:
> 
> WHya re you ever accepting mail for a user that doesn’t exist?

Because I do not know how to avoid it in that specific situation.
That's actually my reason for asking that question.

>> Is there a way to validate the recipient address before bothering with
>> the content of the mail?
> 
> Yes, have postfix check for valid users first before passing the message to amavis.

That is indeed my intention. My question was how to do that.