Hi, I run Exchange 2007 on Windows 2008. Everything works fine but I got error 10049 in event viewer. Failed to start listening (Error: 10049). Binding: 192.168.1.1:25. IP 192.168.1.1 is our gateway, which is SonicWall firewall. Any idea what's wrong here? Your help is highly appreciated! GraceGrace

Hi, I think this forum thread will help: http://social.technet.microsoft.com/Forums/fi/exchange2010/thread/c4c016ac-10de-4be8-8857-311e737f9b78 regards Thomas Paetzold visit my blog on: http://sus42.wordpress.com

Get the "Event Source" from that event and set that service using the switch "UnencryptedOrTLSBindings"

Hi Peddy1st, Thank you for your reply. I disabled POP3 service and IMAP4 service in my Exchange server. Could it be the reason that I got this error? Thanks again, GraceGrace

Hi Ratish, Thank you for your reply. The event source is MSExchangeTransport. Can you describe more detail how/why I use the switch "UnencryptedOrTLSBindings"? What do you think why I got the error? Is it because I disabled POP3 and IMAP4 in services? Thanks again, GraceGrace