※ [本文轉錄自某隱形看板] 作者: wrltertina (小妹) 看板: (某隱形看板) 標題: The DNS server encountered an invalid domain name 時間: Mon Aug 17 18:05:06 2009 不知為什麼..joindomain後的hotmail打1不開 朋友說是dns問題..可是不知道什麼問題..當離開domain後電腦又1能再連hotmail.. ad server看到這個error Q: How does the following event mean? Event ID: 5504 Description: The DNS server encountered an invalid domain name in a packet from 203.24.93.20. The packet is rejected. A: 1. Incorrect forwarder address in the internal DNS, for example, your ISP changed the DNS address. Or you can try to turn off the forwarder. 2. Make sure if you have multiple DNS servers that they are not forwarding to each other. They should forward to an ISP's, or if a child domain in a delegation scenario, to forward to the parent, then the parent forwards to the ISP. 3. Check this article: Description of the DNS Server Secure Cache Against Pollution setting, http://support.microsoft.com/?kbid=316786 4. If you also receive email non-deliverable notifications, you may want to open each queue containing a postmaster message to a spoofed address and delete it (without NDR). Then clear the DNS cache. 5. Poor Internet connection. 6. If the packet is from a private IP address, you may have some hosts with illegal characters in their names. 7. This problem may occur because Windows Server 2003 does not support DNAME. --

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