postfix trusted network

[Frank Kaldewey <kaldewey@anymotion.de>]

Hi

postfix has to relay mails from a webserver(win2k) in LAN to WAN.

webserver          192.168.1.150

mailserver/postfix 192.168.1.100

I edit in etc/postfix/main.cf

mynetworks = 192.168.1.0/28, 127.0.0.0/8

so postfix will accept mails from all host of this network
and relay them.

but mails not relaying.
maillog:

Jul  6 17:59:35 troy postfix/smtpd[25631]: reject: RCPT from
hiphop.de[192.168.1.150]: 554 <frank@xxxx.de>: Recipient address 
rejected: Relay access denied; from=<info@xxxx.de> to=<frank@xxx.de>

Jul  6 17:59:37 troy postfix/smtpd[25628]: lost connection after RSET 
from hiphop.de[192.168.1.150]

Thx Frank