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291385Avoiding being a backscatter source, canonical alternative

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  • Brock Henry
    Feb 14, 2013

      I want to receive mail for old domains, and map them to the new domain.

      I currently have
          canonical_maps = hash:/etc/postfix/canonical


      This works, but as mentioned in the documents, makes me a potential source of backscatter.

      However, I don't understand what the alternative is. 

      My LDAP lookups should all use newdomain.com.au. I also want to map @mail01.newdomain.com.au to @newdomain.com.au for incoming mail delivery/LDAP lookups, etc.

      All my users are virtual users.

      I've read about generic and masquerading, but I'm not sure if they are what I want.

      Thanks, Brock