I have a brand new 2012 server running exchange 2013. Ever since we installed this exchange server, it has been a huge pain. We've had it up and running perfectly one day, then the next it constantly spits out issues from users about not being able to connect to the proxy server. I've had times where OWA and ECP are accessible and functional, and times where they are not (blank page).
Most recent iteration of issues. This morning everything was working fine (and was for a few days minus the fact the clients would randomly disconnect for at most 10-15 seconds at a time before reconnecting). I left for lunch, and came back to all outlook clients receiving a:
There is a problem with the proxy certificate. The name on the security certificate is invalid or does not match the name of the target.
I was also unable to log in to the OWA or the ECP. (would login, but give me a blank page).
After some research that led me to http://sumoomicrosoft.blogspot.de/2012/11/exchange-2013-emc-blank-page.html I was finally able to restore connectivity to the OWA and ECP. Fortunately there arent many users here today, so the only user around is able to function off the OWA. However, this did not resolve the outlook clients.
It may be obvious, but I am not an exchange administrator. My boss sold them exchange 2013 because they demanded hosting onsite rather than through 365 and now Im having to deal with the fallout. If anyone with some exchange experience can give some advice, I will give you all the information you ask to resolve this issue once and for all.