In Technet Microsoft describes to verify the configuration of the sender reputation by Get-SenderReputationConfig | Format-List ProxyServer*
This not really mean that the sender reputation works proper.

How can I verify that the check is working at the server?
Will the reputation write a added open proxy to IP blocklist in the eventlogs?
Or into an other anti-spam log?
Will there be an comment in the SMTP logs for a problematic mail, blocked by detected open proxy?

Any further input would be helpfull
Thank you

Thomas

• Edited by Tom Langer Wednesday, April 29, 2015 8:18 AM

If it is enabled, it works.

See this: https://technet.microsoft.com/en-us/library/bb125186(v=exchg.150).aspx

Hi,

Generally, sender reputation acts on a message only if the message was blocked or otherwise acted on by the Connection Filter agent, Sender Filter agent, Recipient Filter agent, or Sender ID agent. In this case, sender reputation retrieves the sender's current SRL rating from the sender profile that's persisted about that sender on the Exchange server. After this rating is retrieved and evaluated, the Exchange server configuration dictates the behavior that occurs at a particular connection according to the block threshold:

https://technet.microsoft.com/en-us/library/jj218660(v=exchg.150).aspx

I think we can check the Anti-spam agent logging to have a try. Agent logs record the actions performed on a message by specific anti-spam agents in Microsoft Exchange Server 2013:

https://technet.microsoft.com/en-us/library/bb124795(v=exchg.150).aspx

Regards,