EventID 3018 - Exchange can't connect to https://o15.officeredir.microsoft. com

Hi

I've just installed Exchange 2013 at a customer.

The servers are logging Event ID 3018 every hour. We know why and the network group have let the servers bypass the proxy now so the alarm is gone.

BUT the customer wants to know why Exchange needs to contact this URL every hour. Is it needed?

Url: https://o15.officeredir.microsoft.com/r/rlidMktplcWSConfig15?CV=15.0.1076.9&Client=WAC_Outlook&corr=6b41bd78-0b86-48a3-9a17-72312e0cb154 

Any idea? :-)

BR
Steen


June 10th, 2015 8:17am

Hi Niko

We are still having this issue.

What are the server trying to reach at that address? I can't find any info.
The IP is random. Our network group wants the IPs. 
Isn't there a whitepaper with all IPs and ports Exchange needs to be open?

BR
Steen


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July 17th, 2015 2:54am

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