近来由于某台pc需要不断的使用内网的iRedMail 0.6.1发邮件，但很容易达到限制条件，详细日志如下：
Sep  7 16:09:07 hostname1 postfix/smtpd[29303]: disconnect from unknown[192.168.152.220]
Sep  7 16:09:16 hostname1 postfix/smtpd[31637]: connect from unknown[192.168.152.220]
Sep  7 16:09:16 hostname1 postfix/smtpd[31637]: 0AE622F03E: client=unknown[192.168.152.220], sasl_method=LOGIN, sasl_username=username@domain.com.cn
Sep  7 08:09:16 hostname1 policyd: rcpt=157, throttle=abuse(f), host=192.168.152.220, from=username@domain.com.cn, to=ousername@domain.com.cn, size=2563/15728640, quota=217539/250000000, count=60/60(1246), rcpt=60/3600(1270), threshold=0%|100%|1%, sasl_username=username@domain.com.cn
Sep  7 16:09:16 hostname1 postfix/smtpd[31637]: 0AE622F03E: reject: END-OF-MESSAGE from unknown[192.168.152.220]: 554 5.7.1 <END-OF-MESSAGE>: End-of-data rejected: Policy Rejection- Limit has been reached.; from=<username@domain.com.cn> to=<ousername@domain.com.cn> proto=ESMTP helo=<username>
Sep  7 16:09:16 hostname1 postfix/cleanup[30943]: 0AE622F03E: message-id=<20100907080916.0AE622F03E@hostname1.domain.com.cn>
Sep  7 16:09:18 hostname1 postfix/smtpd[31637]: disconnect from unknown[192.168.152.220]

请教各位，如何修改限制策略，才能让他发邮件？

已经采取的措施：
在policyd中的whitelist和whitelist_sender中均插入了相应的记录，但问题依然存在。

感谢各位的回复！