Exchange退信解决方案（国外英文资料）.doc

Exchange退信解决方案（国外英文资料） Exchange Server credit and solution summary The undelivered report (NDR) is the system mail that reports the status of the mail to the sender. This E-mail is a subclass of a regular mail information structure called a passing status notification. The delivery status notification describes three different types of situations: ? Success (2. X.X digital code) ? Persistent transient failure (that is, 4.x.x) ? Permanent failure (i.e. 5.x.x digital code) For more information on the delivery status notification, refer to the consult documentation (RFC) 1891 and RFC 1893. NDR is generated whenever an E-mail cannot be passed. If the computer can detect the cause of the failure, it will map the cause to a status code, And print the appropriate error message. For a list of these code, see RFC 1891 and RFC 1893. For NDR, most digital code is done The form of 5.x.x is reported and will be described as a permanent failure. However, there are transient situations that result in 4.x.x code. Be sure to note that the server of the report problem is also listed in front of the digital code, in the example above, for . Sometimes, The server that reports the problem is not the server that actually encounters the problem. The following list describes the most frequently encountered digital code and its corresponding error status: ? Digital code: 4.2.2 Limited to the previous version of Exchange 2000 Service Pack 3. See 5.2.2 ? Digital code: 4.3.1 Possible causes: this memory deficiency error may be caused by resource problems, such as the full disk. Alternatively, your simple mail transfer protocol (SMTP) The queue is located on the file allocation table (FAT) partition, and the service has reached the number of file handle restrictions that the Windows, SMTP service can open at the same time. You may not get a disk full of errors, but not memory errors. Troubleshooting: make sure you have enough disk storage space and try to run the Exchange queue on the NTFS part