Keyword not supported: 'doorproswrite.db.6847335.hostedresource.com; persist security info'.

Question

hi
my webdite is on 3rd party server and its not bale to communicate with database.
not showing database content.the excetion that i m getting is the following:
System.ArgumentException: Keyword not supported: 'doorproswrite.db.6847335.hostedresource.com; persist security info'.
at System.Data.Common.DbConnectionOptions.ParseInternal(Hashtable parsetable, String connectionString, Boolean buildChain, Hashtable synonyms, Boolean firstKey)
at System.Data.Common.DbConnectionOptions..ctor(String connectionString, Hashtable synonyms, Boolean useOdbcRules)
at System.Data.SqlClient.SqlConnectionString..ctor(String connectionString)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous)
at System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(String connectionString, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions)
at System.Data.SqlClient.SqlConnection.ConnectionString_Set(String value)
at System.Data.SqlClient.SqlConnection.set_ConnectionString(String value)
at Microsoft.Practices.EnterpriseLibrary.Data.Database.CreateConnection()
at Microsoft.Practices.EnterpriseLibrary.Data.Database.GetNewOpenConnection()
at Microsoft.Practices.EnterpriseLibrary.Data.Database.GetOpenConnection(Boolean disposeInnerConnection)
at Microsoft.Practices.EnterpriseLibrary.Data.Database.GetOpenConnection()
at Microsoft.Practices.EnterpriseLibrary.Data.Database.LoadDataSet(DbCommand command, DataSet dataSet, String[] tableNames)
at Microsoft.Practices.EnterpriseLibrary.Data.Database.LoadDataSet(DbCommand command, DataSet dataSet, String tableName)
at Microsoft.Practices.EnterpriseLibrary.Data.Database.ExecuteDataSet(DbCommand command)
at MailManager.ClsMails.GetMailsFromDatabase()
at MailManager.ClsMails.SendMail()
 
 
Please tell me the solution