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coolsport00Flag for United States of America asked on

Outbound SMTP issues in Exchange 2007

I noticed in my queue viewer I have a lot of messages not being sent, and the error associated with each msg is: "421.4.2.1 Unable to connect" and/or "A local loop was detected". I just upgraded to 2K7 from 2K and am having a HOST of issues with this. We still have our 2K server in production until we get our SMTP issues resolved (and to assist in clients being able to be redirected from the old server to the new fairly seamlessly). Can someone assist me in getting my queued msgs to be able to send? When I initially upgraded, all was fine. I had send connectors that seemed to have transferred from my old server. I then created a send connector on my new one and that may have been the beginning of all of my issues. As always, any assistance is greatly appreciated! Thanks.

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8/22/2022 - Mon

OK...I resolved my issue. I deleted the send connector I created for my new mail server and still have the ones from the old server. I stopped/restarted the SMTP Virtual Dir. on my old server and all msgs got delivered. I guess I'm still needing assistance with correctly migrating from my old 2K system to 2K7. What am I doing wrong with the Send connector config? I created a Custom Send Connector with SMTP 'Type' and a 'Address' of "*" (not my org name), and to 'Use DNS (MX) records to route mail automatically'. That should be it right?...not much to creating a send connector. Is it that I have my old send connectors that I'm having the problem? Is there a way to somehow replicate them to my 2K7 server? Should I remove them from my old 2K server and just create a new send connector on my 2K7 server?

Stacy Spear

Please close the question. Thanks.

I'm back on and need assistance with the 2nd part of my comment above...thanks.
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
William Peck

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