Exchange 2007 - is it safe to install SP3 directly over SP1?

The server is an all in one box.
In addition I'll greatly appreciate id someone can post the major changes between SP1 and SP3 (inc. SP2).

Thx
IT_Group1Asked:
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JJClementsConnect With a Mentor Commented:
According to the release notes it is safe to use the following upgrade methods:

You can use the following methods to install Exchange 2007 SP3:

* On a computer that is running the original release version of Exchange 2007, upgrade the program to Exchange 2007 SP3.
* On a computer that is running Exchange 2007 SP1, upgrade the program to Exchange 2007 SP3.
* On a computer that is running Exchange 2007 SP2, upgrade the program to Exchange 2007 SP3.
* Perform a new installation of Exchange 2007 SP3.

http://technet.microsoft.com/en-us/library/ff607233%28EXCHG.80%29.aspx

Here is a Microsoft 'what's new' feature on SP3:

http://technet.microsoft.com/en-us/library/ff607226%28EXCHG.80%29.aspx
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Mike ThomasConnect With a Mentor ConsultantCommented:
All MS Service pack are now cumulative so you can upgrade to any Service Pack from any services pack (or non service packed installs) at any time. Long gone are the days where other services packs were a pre requisite.



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IT_Group1Author Commented:
Thank you guys.
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