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Exxhange SQL And IIS- P90:The following legacy Exchange features have been de-emphasized in Exchange Server 2007. What does that mean? It means that these features are still included in the Exchange product, but they’re not prioritized anymore, and will most likely disappear in the next Exchange release after Exchange Server 2007 | 422 Chapter 7 Managing the Edge Transport Server Figure 7.39 How Sender ID Works Behind the Scenes Sender ID can provide several different results and stamp them appropriately. Table 7.2 lists each of the results as well a short description and the action taken. Table 7.2 Sender ID Results Sender ID Result Description Action Taken Neutral Domain is neutral makes no Stamp and Accept decision about IP address Pass IP address for PRA Stamp and Accept permitted set Fail - - Domain doesn t exist - Sender isn t permitted - Malformed domain - No Purported Responsible Address PRA in header IP address for PRA Stamp and Accept then not permitted set either Delete or Reject Managing the Edge Transport Server Chapter 7 423 Table 7.2 Continued Sender ID Result Description Action Taken Soft Fail IP address for PRA not permitted set Stamp and Accept None No SPF record published for the domain Stamp and Accept Temp Error Transient error could be unreachable DNS server Stamp and Accept Perm Error Possible error in record so couldn t be read correctly Stamp and Accept No matter what the result of the SPF check the result will be used in the calculation process when an SCL rating is generated for a message. Tip_ In you want to check which IP addresses are allowed to send e-mail messages for a given domain you can use a wizard such as the one at www.dnsstuff.com pages spf.htm or open a command prompt and type nslookup -q TXT domain.com. You should then be able to see the SPF record including the list of the IP addresses allowed to send e-mail messages for this domain. For additional information about Sender ID visit http en.wikipedia.org wiki Sender_id. When the Sender ID Filtering agent checks whether a sending SMTP server has an appropriate purported responsible address PRA you can specify what action it should take for a given e-mail message that doesn t have an appropriate PRA. You can configure it