This was predicted. After Nokia announced that it has decided to declare Symbian as open source, its going to be the top mobile operating system! And just few days later Microsoft opens up FUD war against this move by Nokia.

[Microsoft's] Rockfeld sums up those challenges with what some might call the “F word”: fragmentation. Fragmentation is bad, he says, because application software developers have to create multiple versions of their code for different operating systems, or different versions of the “same” operating systems. “There are more Linux consortiums that come and go than there are Linux phones,” he says….

In fact, open source code can actually increase costs for manufacturers and carriers, Rockfeld says. That’s because they have to do more development work, more customization work, and take more risks because they lack a reliable platform partner — like Microsoft. “With us, they don’t have to worry about the platform,” he says.

Read the full article over here

iPhone 2.0 software can now communicate directly with your Microsoft Exchange Server via Microsoft Exchange ActiveSync, giving users push email, contacts, and
calendar. Exchange ActiveSync maintains a connection between Exchange Server and iPhone so when a new email message or meeting invitation arrives, iPhone is instantly updated.

Exchange ActiveSync support
• Microsoft Exchange Server 2003
Service Pack 2
• Microsoft Exchange Server 2007
Service Pack 1

Exchange ActiveSync security policies
• Remote wipe
• Enforce password on device
• Minimum password length
• Require alphanumeric password
• Require complex password
• Inactivity time in minutes

How it will work?
iPhone requests access to Exchange ActiveSync services over port 443 (HTTPS). (This is the same port used for Outlook Web Access and other secure web services, so in many deployments this port is already open and configured to allow SSL encrypted HTTPS traffic.)
ISA provides access to the Exchange Front-End, or Client Access Server. ISA is configured as a proxy, or in many cases a reverse proxy, to route traffic to the Exchange Server.
Exchange Server authenticates the incoming user via the Active Directory service.
If the user provides the proper credentials and has access to Exchange ActiveSync services, the Front-End Server establishes a
connection to the appropriate mailbox on the Back-End Server (via the Active Directory Global Catalog).
The Exchange ActiveSync connection is established. Updates/changes are pushed to iPhone over the air, and any changes made
on iPhone are reflected on the Exchange Server.
Sent mail items are routed to external recipients via SMTP. Depending on your network configuration, the external Mail Gateway
or Edge Transport Server could reside within the perimeter network or outside the firewall.