When agents try to post data to http://ServerName/Altiris/NS/Agent/postevent.asp the following error is returned:
HTTP Error 404 - File or directory not found
Additionally, browsing to this page on the Notification Server returns the same error.
There are multiple causes for this. See the resolution section for all known resolutions.
Check each of the following items. A misconfiguration of any one of these will cause this error:
Notification Server 7.0