InstantForum.NET v2.9.0SQLServerCentralhttp://www.sqlservercentral.com/Forums/notifications@sqlservercentral.comSun, 19 May 2013 06:51:38 GMT20http://www.sqlservercentral.com/Forums/Topic1391992-147-1.aspxI had a similar problem with a new mail server being implemented... the thing was additional updates were done at the same time.It sounds similar so the link below may helphttp://social.msdn.microsoft.com/Forums/en-US/sqlintegrationservices/thread/6e266a75-7738-4683-8e0e-1968707e74beSteveThu, 03 Jan 2013 02:09:28 GMTSteve.Whttp://www.sqlservercentral.com/Forums/Topic1391992-147-1.aspxIt seems to be some sort of permission issue.Which account is used to run the SSIS package?Wed, 05 Dec 2012 03:49:03 GMTKoen Verbeeckhttp://www.sqlservercentral.com/Forums/Topic1391992-147-1.aspxAll, A week ago some outside consultants upended my world. They switch the e-mail server from "tom" to "katherine". We have tested e-mailing from SQL server and it works fine. We changes the server name from "tom" to "katherine" within the dtsConfig file. However we get the following error:Microsoft (R) SQL Server Execute Package UtilityVersion 10.0.5500.0 for 64-bitCopyright (C) Microsoft Corp 1984-2005. All rights reserved.Started: 8:54:15 AMError: 2012-12-03 08:54:50.21 Code: 0xC002F304 Source: Send Summary Mail Send Mail Task Description: An error occurred with the following error message: "Mailbox unavailable. The server response was: 5.7.1 Client does not have permissions to send as this sender".End ErrorWarning: 2012-12-03 08:54:50.22 Code: 0x80019002 Source: Package Cleanup Description: SSIS Warning Code DTS_W_MAXIMUMERRORCOUNTREACHED. The Execution method succeeded, but the number of errors raised (1) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specifieAny suggestions?Thanks in advanceCharles SQL 2008Mon, 03 Dec 2012 08:44:22 GMTcgivens