New installation of Exchange 2010; an existing Exchange 2003 server in the organization/domain.
- activesync over the internet
- pop3 over the internet (don't need imap)
- owa over the internet
- mail exchanged between the new 2010 and the old 2003 without certificate errors
- mail to continue to flow back and forth between the new 2010 server and the smarthost at appriver.com (outside our network)... this is currently working with no certificates installed
How many certificates do I need? They come in groups of 5 from godaddy.com (best price).