Message delivery to the host '168.95.6.139' failed while delivering to the remote domain 'msa.hinet.net' for the following reason: The remote server did not respond to a connection attempt. iom gettitng this error message through our server.we are using smtp service in IIS.we need a solution to solve this problem Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="smtpsvc" /> <EventID Qualifiers="32772">4006</EventID> <Level>3</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2010-01-05T04:07:06.000000000Z" /> <EventRecordID>117109</EventRecordID> <Channel>System</Channel> <Computer>Application_server</Computer> <Security /> </System> <EventData> <Data>168.95.6.139</Data> <Data>msa.hinet.net</Data> <Data>The remote server did not respond to a connection attempt. </Data> <Binary>D20204C0</Binary> </EventData> </Event>

Can you telnet into destination server on port 25. Any NDRs getting generated??Where are the mails getting stuck.Increase the disgnostic logging for "Transport" on the server that has the queues built up and check the application logsRaj

Hi,Any update? Could you telnet the remote server?How to Use Telnet to Test SMTP Communicationhttp://technet.microsoft.com/en-us/library/bb123686(EXCHG.80).aspxBy the way, using smtp service in IIS?Do you just install SMTP service in IIS as a mail server, or you installed the exchange 2003 server or exchange 2007?<!---->Frank Wang