[Dovecot] problem with an howto from the wiki.

hello, i'm reading and trying to configuring my mailserver following this howto on the dovecot wiki:

http://wiki.dovecot.org/moin.cgi/DovecotPostgresql

but i got always this problem:

ERROR: permesso negato per la relazione postfix_virtual

in english is "permission denied for the relation postfix_virtual".

I dont know where the problem is, but if i send an email from localhost all works good, the problem appear when i try to test my mailserver sending an email from another mta.

this is what i got as error:

Recipient address rejected: User unknown in local recipient table (in reply to RCPT TO command)

excuse me in advance for my poor and ugly english.

thanks!

ciao, peppe

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