[Kruser]

I ´ve just realized that i´ve forgotten following line in the main.cf

virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf

but the failure is still the same.
Still the mysql query log has changed. Here the new version:

090618  4:48:21      29 Connect     mail_admin@localhost on mail
                     29 Query       SELECT transport FROM transport WHERE domain='*'
                     29 Query       SELECT transport FROM transport WHERE domain='*'
                     30 Connect     mail_admin@localhost on mail
                     30 Query       SELECT domain AS virtual FROM domains WHERE domain='gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='kruseltier@gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='.de'
                     30 Query       SELECT domain AS virtual FROM domains WHERE domain='oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='hendrik@oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='.de'
                     31 Connect     mail_admin@localhost on mail
                     31 Query       SELECT destination FROM forwardings WHERE source='hendrik@oneclick-login.de'
                     32 Connect     mail_admin@localhost on mail
                     32 Query       SELECT email FROM users WHERE email='hendrik@oneclick-login.de'
090618  4:48:23      30 Query       SELECT domain AS virtual FROM domains WHERE domain='gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='kruseltier@gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='.de'
                     30 Query       SELECT domain AS virtual FROM domains WHERE domain='oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='hendrik@oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='.de'
                     31 Query       SELECT destination FROM forwardings WHERE source='hendrik@oneclick-login.de'
                     33 Connect     mail_admin@localhost on mail
                     33 Query       SELECT email FROM users WHERE email='hendrik@oneclick-login.de'
                     30 Query       SELECT domain AS virtual FROM domains WHERE domain='oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='hendrik@oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='oneclick-login.de'
                     29 Query       SELECT transport FROM transport WHERE domain='.de'
                     31 Query       SELECT destination FROM forwardings WHERE source='kruseltier@gmx.de'
                     33 Query       SELECT email FROM users WHERE email='kruseltier@gmx.de'
                     31 Query       SELECT destination FROM forwardings WHERE source='@gmx.de'
                     33 Query       SELECT email FROM users WHERE email='@gmx.de'
                     30 Query       SELECT domain AS virtual FROM domains WHERE domain='gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='kruseltier@gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='gmx.de'
                     29 Query       SELECT transport FROM transport WHERE domain='.de'
090618  4:49:21      32 Quit
090618  4:49:23      31 Quit
                     30 Quit
                     29 Quit
                     33 Quit