Hi, After changing IP address on the Exchange Server mail are queued on the Edge Server. When Microsoft Exchange Transport service starts it gives me the following error : Event Type: Error Event Source: MSExchangeTransport Event Category: SmtpReceive Event ID: 1019 Date: 4/20/2011 Time: 11:53:31 PM User: N/A Computer: IFC-EXCH2 Description: Failed to start listening (Error: 10049). Binding: 10.0.102.22:587. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. THe binding address shown in the message doesn't exist anymore. It has change. Thank you

The problem was with the Exchange Server Authentication and has nothing to do with the error. Problem with the Cisco ASA. Took out the Fixup protocol smtp 25. Thanks