MAC Outlook Connectivity Issues

I have a client with a MAC and SBS 2011 and it is having connectivity issues every week, it will work ok during the week remotely and internally and when I take it home for the week and work on it, it is fine, however when I bring it back to the office it will not connect.
clctechsAsked:
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Imtiaz HashamTechnical Director / IT ConsultantCommented:
What will it not connect to? Network, Outlook, Domain?

If it's just Outlook, it's changing the RPC/HTTPs connection.
clctechsAuthor Commented:
It has issues connecting to Exchange frequently. Whether its internally or externally.
Imtiaz HashamTechnical Director / IT ConsultantCommented:
Can you please advise what the RPC/HTTPS settings are at present on the network.

And settings on the mac please...  (Hide just the domain name part if you can please).

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