sql 2005 设立邮箱后 发送测试报错

sql 2005 设置邮箱后 发送测试报错
错误日志如下：  

1) Exception Information =================== Exception Type: System.NullReferenceException Message: 未将对象引用设置到对象的实例。 Data: System.Collections.ListDictionaryInternal TargetSite: Microsoft.SqlServer.Management.SqlIMail.Server.Objects.Account GetAccount(Int32) HelpLink: NULL Source: DatabaseMailEngine StackTrace Information =================== 在 Microsoft.SqlServer.Management.SqlIMail.Server.DataAccess.DataAccessAdapter.GetAccount(Int32 accountID) 在 Microsoft.SqlServer.Management.SqlIMail.Server.Controller.CommandFactory.CreateSendMailCommand(DBSession dbSession) 在 Microsoft.SqlServer.Management.SqlIMail.Server.Controller.CommandFactory.CreateCommand(DBSession dbSession) 在 Microsoft.SqlServer.Management.SqlIMail.Server.Controller.CommandRunner.Run(DBSession db) 在 Microsoft.SqlServer.Management.SqlIMail.IMailProcess.ThreadCallBack.MailOperation(Object o)

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http://blog.csdn.net/zhaowenzhong/article/details/7043222