1.备份
select emailserverprofileid, incomingpassword,outgoingpassword from emailserverprofile
select mailboxid, [password] from mailbox order by [Password] desc
select queueid,emailpassword from queue order by [emailpassword] desc
select SystemUserId,emailpassword from usersettings order by [emailpassword] desc
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2.删除
update mailbox set password = null
update queue set emailpassword=null
update usersettings set emailpassword=null
3.重新设置
重新设置数据加密