Postfix create inexistent maildir

[filipealvarez]

Hello, i'm using ISPConfig 3.0.1.1 on Ubuntu 8.04.2 and I have a strange trouble.

The postfix creates maildir folder of INEXISTENT mail users!
In the example below I sent an email to ANYTHING_HERE@mixdinternet.com.br
and the maildir and message file has created.

root@web:/etc/postfix# ls /var/vmail/mixdinternet.com.br/
ANYTHING_HERE MARACARTU postmaster roossst root

Apr 25 06:51:13 web postfix/qmgr[3931]: 7AE5642427: from=<root@web.mixdinternet.com.br>, size=3104, nrcpt=1 (queue active)
Apr 25 06:51:13 web postfix/smtpd[23057]: disconnect from localhost[127.0.0.1]
Apr 25 06:51:13 web amavis[5149]: (05149-15) Passed CLEAN, <root@web.mixdinternet.com.br> -> <ANYTHING_HERE@mixdinternet.com.br>, Message-ID: <20090425105112.D3D9842428@web.mixdinternet.com.br >, mail_id: V8BHxyxK58-B, Hits: 0.713, size: 2602, queued_as: 7AE5642427, 644 ms
Apr 25 06:51:13 web postfix/smtp[23054]: D3D9842428: to=<ANYTHING_HERE@mixdinternet.com.br>, relay=127.0.0.1[127.0.0.1]:10024, delay=0.76, delays=0.1/0.01/0.01/0.64, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 7AE5642427)
Apr 25 06:51:13 web postfix/qmgr[3931]: D3D9842428: removed
Apr 25 06:51:13 web postfix/pipe[23058]: 7AE5642427: to=<ANYTHING_HERE@mixdinternet.com.br>, relay=maildrop, delay=0.21, delays=0.09/0.01/0/0.11, dsn=2.0.0, status=sent (delivered via maildrop service)

May someone help me?
Tnks!