' Modify SMTP Virtual Server Delivery Properties
strComputer = "."
Set objWMIService = GetObject _
("winmgmts:{authenticationLevel=pktPrivacy}\\" _
& strComputer & "\root\microsoftiisv2")
Set colItems = objWMIService.ExecQuery _
("Select * from IIsSmtpServiceSetting")
For Each objItem in colItems
objItem.SmtpLocalDelayExpireMinutes = 1000
objItem.SmtpLocalNDRExpireMinutes = 4000
objItem.SmtpRemoteDelayExpireMinutes = 1000
objItem.SmtpRemoteNDRExpireMinutes = 4000
objItem.SmtpRemoteProgressiveRetry = "60,120,240"
objItem.Put_
Next