From: Chris McKeever (techjedigmail.com)
Date: Sun Jul 02 2006 - 13:35:20 CDT

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On 7/2/06, Magnus Bäck <magnusdsek.lth.se> wrote:
> On Sunday, July 02, 2006 at 17:24 CEST,
> Chris McKeever <techjedigmail.com> wrote:
>
> > On 7/2/06, mouss <usebsdfree.fr> wrote:

> >
> > so I think recipient validation is working correctly - I do get
> > bounces when I send invalid address, let me know if I am still
> > overlokoing something
>
> But you don't want bounces. Bounces are bad. You want rejections. It is
> true that virtual alias rewriting is performed recursively -- but the
> recipient validation made by smtpd(8) is NOT recursive. If a lookup
> returns a result, the address it valid. This means that your Postfix
> will accept any address with a dot in it, e.g. blah.blahexample.com,
> and later bounce the invalid recipient bblahexample.com.
>

if I sent to no.onesemailexample.com I get:
Final-Recipient: rfc822; nonesemailexample.com
Original-Recipient: rfc822; no.onesemailexample.com
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; unknown user: "nonesemailexample.com"

if I send directly to nonesemailexample.com, I get

Final-Recipient: rfc822; nonesemailexample.com
Original-Recipient: rfc822; no.onesemailexample.com
Action: failed
Status: 5.0.0
Diagnostic-Code: X-Postfix; unknown user: "nonesemailexample.com"

so isnt that behaving properly in its verifying recipient before it
does anything? or am I missing something?

> [...]
>
> --
> Magnus Bäck
> magnusdsek.lth.se
>

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