I have exchange 2007 running on 2008 sbs and most clients on 2003 office which works fine. However when using 2007-2010 office the 'out of office " does not work. the reason is that the ip address can not be 90.0.0.xx as the network is currently setup, later office uses autodiscover. I know I will have to change ip's, but right now there is a convoluted amount of servers/clients/web sites/email rerouting/ etc. to deal with. MY QUESTION is What if anything i can do to "work around" temp..to setup a user going on vacation with current config....my thought is to use 2003 on his, but then he has like over a 20gb email account..any other options???????