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Re: accepting mail for ""
domain.com
domain.com
From: Wietse Venema (wietseporcupine.org)
Date: Mon Feb 25 2008 - 10:28:18 CST
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Aaron Bennett:
> Ralf Hildebrandt wrote:
> >
> > "" = mailer-daemon: = postmaster = root = jvieiraclarku.edu jgiangrandeclarku.edu>
> >
>
> understood, I got that out of the logs... but why does "" = mailer-daemon?
>
>
> It's more of a curiosity at this point...
Symmetry.
When the mail system SENDS a delivery status notification it uses
the RFC 2821 null envelope sender address, and MAILER-DAEMON in
the From: header. Thus, Postfix sends mail FOR the null address
to MAILER-DAEMON (i.e the default value of empty_address_recipient).
Wietse
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