Exchange 2010 - ActiveSync (Internal and External)
Posted on 2014-11-05
Got a small issue that I can't seem to get my head around.
I have one Exchange 2010 server running with a Geo Trust SSL certificate with services such as OWA, Activesync etc. Everything is working fine, apart from one small problem - ActiveSync.
ActiveSync works externally, however, it will not work internally. I believe this to be a DNS issue. So I just want to run through the config, to see if anyone can spot my mistake.
Mobiles devices are currently pointing at:
mail.company.co.uk (I have a SANs cert for this domain)
** When using a browser for webmail - I use the address mail.company.co.uk/OWA (this works fine with my SSL cert)
However, when configuring ActiveSync on a mobile device you can ONLY use the address mail.company.co.uk. Even though in EMC it's mail.company.co.uk/activesync - So there must be a way the system knows it's an ActiveSync connection?
Which comes to my question.
I have an internal DNS entry for mail.company.co.uk which points to my Exchange server. When a device is connected internally, this address resolves correctly to the Exchange box, however, the ActiveSync mail does not work unless I use the internal address that's set in EMC. ie severname/Microsoft-Server-ActiveSync
So, how do I get the devices to work Externally and Internally. My gut feeling is, DNS. But I just can't figure out what needs to be done.
Any help offered will be greatly appreciated.