Disable SMB Signing in SBS 2008
These steps are quoted from Windows Small Business Server 2008 Unleashed
A must-read for every serious SBS 2008 administrator and consultant
40 pages about Macintosh integration
1) From the Start menu, open the Group Policy Management console (type gpmc.msc in the search field and press Enter).
2) Click Continue in the User Account Control prompt.
3) Expand Forest, domains, and select the internal domain.
4) Right-click on the internal domain name and select Create a GPO in This Domain, and Link It Here.
5) In the Name field, enter SMB Signing Disabled and click OK.
6) Right-click on SMB Signing Disabled and select Edit.
7) Expand Computer Configuration, Policies, Windows Settings, Security Settings, Local Policies and select Security Options.
8) Double-click the Microsoft Network Client: Digitally Sign Communications (Always).
9) Enable the Define This Policy Setting checkbox and make sure the Disabled radio button is selected, and then click OK.
10) Double-click Microsoft Network Server: Digitally Sign Communications (Always).
11) Enable the Define This Policy Setting checkbox and make sure the Disabled radio button is selected, and then click OK.
12) Close the Group Policy Editor.
13) In the Group Policy Management console, right-click on SMB Signing and select Enforced.
14) Close the Group Policy Management console.
15) Open a command prompt and run gpupdate /force
P.S. Please come back and tell what was clear / unclear, what worked / did not work. Thinking about putting up a blog on Mac / SBS 2008 and Exchange 2007 /2010 integration.
MCTS: Messaging | MCSE: S+M | Small Business Specialist