【求助】關於Exchange2000不能收外部信件
Exchange對外發信都沒問題，但是卻一直無法收到外部信件，DNS設置也沒問題，Exchange2000是架在ISDN的IP分享器後，NAT也有將SMTP TCP Port25指向Exchange2000 Server，但是就是無法收到外部寄來的郵件，對外發送及內部都很正常，下面是由hinet測試發送的，請問有人可以幫忙嗎?
The original message was received at Wed, 5 Mar 2003 11:13:14 +0800 (CST)
from localhost [127.0.0.1]
----- The following addresses had transient non-fatal errors -----
<[email protected]>
----- Transcript of session follows -----
... while talking to 210.74.255.90.:
>>> MAIL From:<[email protected]> SIZE=232
<<< 454 5.7.3 Client was not authenticated.
<[email protected]>... Deferred: 454 5.7.3 Client was not authenticated.
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old
