In Octopus there is information to help distinguish between people when searching for a user. For example, their site name, department, their Windows username etc. There is default information, but other variables can be added, removed or reordered.
The reason is probably that the software isn't managed. The reason is probably that the software isn't managed.
When an error occurs, Octopus generates a log which describes the error in more detail.
Article detailing how to use the Sender Policy Framework (SPF) with Octopus.