I'm currently using the exchange_response probe and noticed the ews_response probe. What is the difference between the two probes?
They look like they provide the same function.
The ews_response probe uses Exchange web services. This means it only works with newer versions of Exchange (listed in the release note) but is cross-platform.
The exchange_response probe uses MAPI to communicate with Exchange. It only runs on Windows and requires Outlook to be installed.
I have not used ews_response yet but definitely plan to do so. I can say that exchange_response has a good set of features, but it can be very difficult to setup properly. As far as I know, it still requires that the host running the probe is in the same domain as Exchange, which is sometimes inconvenient or not possible.
I like the ease of configuration with the ews_response, but the roundtrip values are not accurate. My QOS values are 15s for round trip. Values for the same roundtrip on the exchange_response are between 5-7 seconds.
Is anyone using ews_response with accurate results?
How often do you have the ews_reponse probe configured to check the mailbox?
Mail will send every 5 min and check the mailbox every 15 seconds.
That is why you are getting 15-second round trip times in the probe. If it only checks every 15 seconds, you are not going to get better resolution than that. You can shorten that to 5 seconds to match the exchange_response probe.
Thanks for the info. I was assuming it would be based on the email time stamp.
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