Troubleshooting external mailflow from Exchange 2003 to Exhcange 2007
Posted on 2009-02-17
I have an exchange 2003 box that sends and receives mail from a smarthost (Postini). We recently added a new server with Exchange 2007. I ran the required setup.com /prepareAD and everything installed properly. Last night I moved a mailbox to that server (2007) and when I came in this morning he could send and receive internal mail, could send mail externally but cannot receive mail from outside.
Now the 2003 server is set to be the primary server, and all mail from the 2007 is routed through the 2003 box.
So upon doing some searches I tracked some messages flowing through the 03 box to the 07 box and according to the 03 box is is handing them off, but when I look in the queue the messages are still sitting in there. I don't see any errors, or more to the point I'm not sure what I should be looking for as to why the messages are still sitting in the queue.
So I tried to telnet to the new server from my personal workstation and I get a response from the server, I say helo it says hello back, I enter Mail From: email@example.com and it returns "530 5.7.1 Client was not authenticated", but when I run it from the server it appears to work ok and the recipient does in fact get the message.
If I try to make the Mail From: my gmail address it returns " 425 4.3.1 Insufficient system resources"
So any help is appreciated.