Mike, it is the same as mentioned here:
ftp://ftp.microsoft.com/pss/Tools/Exchange%20Support%20Tools/killmailuser/readme.txt
In other words - list of attributes removed:
"deliverAndRedirect",
"homeMDB",
"homeMTA",
"mail",
"legacyExchangeDN",
"proxyAddresses",
"showInAddressBook",
"msExchADCGlobalNames",
"mailNickname",
"replicatedObjectVersion",
"replicationSignature",
"targetAddress",
"msExchMailboxSecurityDescriptor",
"dLMemDefault",
"textEncodedORAddress",
"mAPIRecipient",
"mDBUseDefaults",
"msExchALObjectVersion",
"msExchHideFromAddressLists",
"msExchHomeservername",
"msExchMailboxGuid",
"msExchPoliciesIncluded",
"msExchPreviousAccountSid",
"msExchUnmergedAttsPt",
"msExchUserAccountControl",
"msExchMasterAccountSid"