人家寄給我的信被退，請大大幫我看看好嗎

[hschang]

Dear 大大：下面是人家寄給我退信的訊息

This is the Postfix program at host authicp1.giga.net.tw.

I''m sorry to have to inform you that your message could not be
be delivered to one or more recipients. It''s attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The Postfix program

<hschang@hschang.idv.tw>: host hschang.idv.tw[219.84.99.104] said: 554 SMTP
relay service does not allow your IP Address to relay mail to
hschang@hschang.idv.tw (in reply to RCPT TO command)



我的網浴是hschang.idv.tw，

[Arnor]