Mail Security for Exchange by changing SEP 12.1 to SBE2013

Hello everybody!

We think about changing from SEP 12.1 to SBE2013 because of the advantages of the cloud administration.

But in SEP 12.1 there was the Mail Security for MS Exchange server included, and I miss it in the SBE2013. Is it required or recommended to have a special exchange server based software to secure emails? The SBE2013 will check all emails too, I'm right?

There is a email security cloud version available. Is that the cloud based counterpart of Mail Security for MS Exchange? And is that required to have it for the best protection?

Greetings from Germany

Michael