* Robert Fitzpatrick <rob...@webtent.org>:
> I have a Postfix 2.8.5 server that is a gateway transport for several
> domains and it is sending backscatter when the transport map destination
> rejects user unknown.

User relay_recipient_maps OR use reject_unverified_recipient in
smtpd_*_restrictions.

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebra...@charite.de | http://www.charite.de
            

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