I inherited a 2010 SP2 exchange server and after looking at the configuration, etc. the BPA found that the siteFolderServer attribute points to a deleted object. The previous sysadmin who is transitioning out told me they don't use public folders (probably existed from the previous 2003/2007 servers).
I was looking at this article
about trying to fix it but because public folders are not being used, wondered if the first 5 steps can be ignored and if only nullifying that attribute is fine to fix this before I do an SP3 upgrade this weekend.