Unable to connect to exchange server after changing to opendns?

[satish_arasada]

After configuring the servers to opendns ,I am unable to connect to  exchange server.I am using office 365 and outlook2013 as my mail client.

[rotblitz]

You most likely blocked domains by your settings which are needed to use these sites.
Find the blocked domains here: https://dashboard.opendns.com/stats/all/blockeddomains and don't block them any longer.

See also https://support.opendns.com/entries/69549200-Email-is-being-blocked

[Anonymous]

It sounds like you're blocking some of the domains needed for software. I would also recommend checking your blocked domains list, and look to see if you can find the culprit domains. Once you find the domains, you can then add them to your 'never block' list to whitelist them. For instructions on how to do that please see the article below:

https://support.opendns.com/entries/53936430-Configuring-OpenDNS-on-your-Network