exchange 2007 with windows 2012 R2 domain controllers environment.

Hello,

I am planning to upgrade to AD windows 2012 R2 from 2008 in 2003 on funtional level for domain and forrest, my question is, is 2007 exchange (Version build: 08.03.0245.001) supported on 2012 R2 domain environment on 2008 funtional level?

I am planning to upgrade exchange later in december to exchange 2013 but not now.

Thanks in advance