Exchange 2007 Update Rollup 4 for Exchange Server 2007 Service Pack 1 (KB952580) was mistakenly released to MS Update, the MS Update Catalog, and WSUS for download.
The mistake was caught, but not before there was a possibility that the update was downloaded.
For those running SBS 2008 in Beta or RC form, verify that your servers did not pull the update because it can terminally destabilize your installs.
From the Exchange Team Blog You had me at EHLO: The case of disappearing Update Rollup 4.
We just verified our RC installs and are fortunate that none of them show the update installed or pending.
The out-of-the-box WSUS settings and manual updates for the server should protect us, but it does not hurt to verify that nothing went awry.
Microsoft Small Business Specialists
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