Microsoft Exchange Error Message – HTTP/1.1 503 Service Unavailable?

My university has a website we can go to to access out email through microsoft exchange. When i go to the website, the login screen displays as usual. Once I type in my info, it takes a looooong time like the page is page loading then I get a HTTP/1.1 503 Service Unavailable message.

Is this something to do with my schools server, or with how my computer is trying to access the server? How can I fix it if it’s something on my end?

We have had some severe weather (tornados) in the area tonight that resulted in some power outages, so could this be part of the problem? It let me access my email for about three hours after the storms had passed, but now I just keep getting this message.
Not sure if this will matter, but I’ve always used a Macbook. I have tried using both Safari and Firefox, both of which always work. I am also using the same wireless conntection as usual.

Technorati Tags: email, login screen, macbook, microsoft, microsoft exchange, page loading, power outages, safari, severe weather, storms, tornados

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