*(_at_)comain to *(_at_)localhost with qmail

Hi!

I'm running qmail, so I have some little problems to set this up.

I want, that every email-Adressalias, that is used at @cichlids.com,
which points to a single mailbox here at my ISP is dropped to exactly
this alias at my LAN-Host, neutron.

so 
a(_at_)cichlids(_dot_)com schall become a(_at_)neutron
b(_at_)cichlids(_dot_)com shall become b(_at_)neutron
whatelse(_at_)cichlids(_dot_)com --> whatelse(_at_)cichlids(_dot_)com

How can I do this with qmail?
Important is, that this is resent into the smpt-Queue to the local
qmail, because other users might want to have their own procmail-rc's
or are mailing-lists.

Thank you

Alex

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