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Help with postfix localhost.localdomain

Anyone knows a fix for this? the postmaster@, root@ and the hostmaster@ always exist "under-water" even if you have the catch-all disabled. This is a bug imho.
 
The reason for mapping of root@<domain> and postmaster@<domain> to [email protected]omain is that if someone tries to connect administrator of mail server or error message is delivered to domain's postmaster, Plesk administrator gets this message and can investigate/fix the problem. Otherwise, if default mapping is not implemented, message is going to be lost.

For now, in order to receive mail addressed to root@<domain> and postmaster@<domain>, please create mailnames 'root' and 'postmaster' on domain or add them as aliases to existing mailname where you would like to get these messages.
 
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