First I'll start by saying I'm an Exchange novice, so I'm a bit green when it comes to exchange in general.
Looking through the error and event logs, I noticed a bunch of the errors in the attached file.
Is this something to be concerned with? I am not familiar with the IP address listed, concerned someone is trying to hack in? or perhaps nothing to concerned about?
I also have seen the same error message with a different IP - 184.108.40.206
Thanks in advance