Jonathan Vaughn:
> MX only points to Google on this domain that we want to set up this split
> domain handling. The other domains' we have configured in Postfix, their MX
> only point to Postfix. In all cases, MX only goes to one or the other.
>
> Google DOES accept mail for invalid recipients, and then relays them to
> Postfix.
That is bad.
> I sent a test message to a non existant user and Postfix logs this but I
> never receive a bounceback from Google (email/domain changed to @example.com)
> :
> Mar 26 20:12:00 prod postfix/smtpd[30547]: connect from
> mail-qc0-f174.google.com[209.85.216.174]
> Mar 26 20:12:00 prod postfix/smtpd[30547]: NOQUEUE: reject: RCPT from
> mail-qc0-f174.google.com[209.85.216.174]: 550 5.1.1 <
> doesnotexistt...@example.com>: Recipient address rejected: User unknown in
> virtual mailbox table; from=<t...@example.com> to=<
> doesnotexistt...@example.com> proto=ESMTP helo=<mail-qc0-f174.google.com>
> Mar 26 20:12:00 prod postfix/smtpd[30547]: disconnect from
> mail-qc0-f174.google.com[209.85.216.174]
>
> No rejected mail bounceback (Google appears to eat it), it just disappears
> from existence, if it doesn't exist in Postfix's virtual mailbox table.
That would be bad, if they accept mail and then throw it away. Some
laws don't allow this, if I am not mistaken.
Wietse
