Recommended post SP4 fixes for Exchange 5.5
First of all, I want to let you know that I highly recommend that you run Exchange 2003 since the support date for Exchange 5.5 has already past (and 2003 rocks!), but since so many companies are still running 5.5 I wanted to forward you a list that I use.
Some of these will require a call to PSS in order to get the fixes. As always, TEST these fixes in your test lab before deploying in your production environment.
Credit: This list was first composed by my friend Ross Smith IV. I only slightly modified it.
1. https://support.microsoft.com/default.aspx?scid=kb;en-us;309149 (JET Hot-Fix)
2. https://support.microsoft.com/default.aspx?scid=kb;en-us;304062 (RPC Hot-Fix)
3. https://support.microsoft.com/default.aspx?scid=kb;en-us;282533 (IS Hot-Fix)
4. https://support.microsoft.com/default.aspx?scid=kb;en-us;304115 (DS Hot-Fix)
5. https://support.microsoft.com/default.aspx?scid=kb;en-us;810579 (ESE Hot-Fix)
6. https://support.microsoft.com/default.aspx?scid=kb;en-us;329415 (IS Provider Hot-Fix)
7. https://support.microsoft.com/default.aspx?scid=kb;en-us;818709 (CDO Hot-Fix)
8. https://support.microsoft.com/?id=834466 (IS Hot-Fix)
9. https://support.microsoft.com/default.aspx?scid=kb;en-us;829706 (MTA Hot-Fix)
10. https://support.microsoft.com/default.aspx?scid=kb;en-us;829436 (IMS Hot-Fix)
Edited: Changed #8 to include the more recent fix. Thanks again Ross...