Outlook 2013 is access the Office 365 IP address

We have 25 computers at our LA office and today I was monitoring the firewall when our speed slowed down today to see what computers were using the most bandwidth.  One of them had 7 destinations open to our Office 365 site.  
I verified that the computer was using Outlook and not the Office 365 login.

What would cause this?  How do I change it?
J.R. SitmanIT DirectorAsked:
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MacleanSystem EngineerCommented:
Is Office 365 installed? Or is his outlook profile pointing to office 365?
You can download tcpview to his system from Microsoft SysInternals Suite, and see what is making the connections perhaps.
J.R. SitmanIT DirectorAuthor Commented:
I'm a bit confused.  Office 365 isn't and installation (as far as I know).  You access it via the Web.

All of our computers point to the exact same location, except to individual mailboxes.  
First one is the that is accessing the Office 365 IP, 2nd one isn't point to Office 365

https://outlook.office365.com/mapi/emsmdb/?MailboxId=8af4cf14-35b0-4cdc-86fe-020acd872c16@????.com
https://outlook.office365.com/mapi/emsmdb/?MailboxId=79503a77-0a5f-4567-9f6e-a60beb2f7339@????.com
MacleanSystem EngineerCommented:
You can configure outlook to connect straight through to office 365.
E.G. if user has MS Office 365 listed in Add/Remove programs, then one can safely assume that this is connected to Office 365. (You can access it via the web or via the Office 365 installation which can be downloaded from the web if your licensing entitles you to do so)

If the user has a regular office 2013 deployed, they can still setup outlook manually to point to a 365 account.

So when checking the users outlook account configuration, you should be able to see if it points to an internal mail server, or the office 365 url. (outlook.office365.com)
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J.R. SitmanIT DirectorAuthor Commented:
Thanks.  I just checked an Office 365 in not installed.
J.R. SitmanIT DirectorAuthor Commented:
I logged on to her computer as me and got the same results.  So it's computer related and not profile related.  
Any thoughts will be appreciated.
MacleanSystem EngineerCommented:
Download TCPView here from Microsoft, and run it on the workstation.
This will help to narrow down the app requesting access.

Once the app has been identified check that app's configuration, and perhaps have a look in Schedule Tasks to see if any tasks exist talking to Office 365.
J.R. SitmanIT DirectorAuthor Commented:
Please accept my apology.  I didn't look hard enough.  All users are accessing the OWA IP.  Sorry

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MacleanSystem EngineerCommented:
No worries, now you know at least :)  Good luck.
J.R. SitmanIT DirectorAuthor Commented:
Thanks
J.R. SitmanIT DirectorAuthor Commented:
I asked the question before doing complete research.  There was no problem.
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