[postfix/courier/mysql] Mail filtering and "default domain"

[netcrusher]

Hi,

I have successfully set up a virtual mail server according to the great howto in the Wiki (postfix, courier, authdaemon, smtp-auth, mysql, roundcube). I have three questions remaining:

• I have a virtual domain mail.example.com and a canonical domain of example.com. Now, I would like to have mail.example.com as my "default" virtual domain. I have already read on address rewriting but would like to reassure that this is possible and I go the right path.
  
  
  
  • MUAs are still using the full virtual domain of mail.example.com for setting up my server (default anyway)
    
  • Any incoming mail to example.com should be rewritten to mail.example.com
    
  • Any outgoing mail from mail.example.com should be rewritten to example.com (masquerade_domains?)
    
  
  
• I have currently aliased postmaster as admin in /etc/mail/aliases. Am I right in thinking this only applies to my canonical domain example.com? How can I route postmaster@example.com to admin@mail.example.com?
  
• I would like to filter mail in a specific account upon receipt. How could I best accomplish this? Filtering in the MUA is not an option since I have multiple devices. (Subscribed to quite some mailing lists => many incoming mails)
  

Feel free to ask for further information, I often forget to include information in my initial posts.
Thank you very much for your kind support!

netcrusher

EDIT: Seems like the "default" virtual domain can easily be solved through the transport setting (local/virtual/relay) -- please forgive my stupidity!

[hydrapolic]

Maybe just use the domain example.com and deliver using virtual.