7,920 questions
Set the B send connector address space to * and disable send connector A. That will work unless you changed something else.
Exchange Server Send Connector
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Mark TT
146
Reputation points
Hi ,
We've multiple exchange 2010 and exchange 2016 and running on coexistence mode.
A send connector with domain * and source server 2010.
B Send connector with domain gmail.com and source server 2016.
Mailbox on exchange 2010 will go to exchange 2010 A Send Connector.
Mailbox on exchange 2016 except gmail.com go to exchange 2010 A Send Connector.
After disable A Send Connector, Mailbox on exchange 2010 will receive bounce back.#554 5.4.12 SMTP; Hop count exceeded - possible mail loop detected , it can't route to exchange 2016 B Send connector.
Can we route all the mail traffic to Exchange 2016 B Send connector?
Thanks.
Exchange Exchange Server Management
Accepted answer
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Andy David - MVP 157.4K Reputation points MVP Volunteer Moderator2021-03-28T11:59:50.2+00:00
5 additional answers
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Mark TT 146 Reputation points
2021-03-30T14:51:46.333+00:00 anonymous userDavid @Anonymous The environment too complex , let me take more time to study.
Thanks for your help. -
Mark TT 146 Reputation points
2021-03-28T12:03:47.75+00:00 anonymous userDavid Yes, I've try to config B connector with * and disable send connect A, it can't route correctly, so I'm confuse with the connector.
Any exchange site configuration need to take care?Thanks.
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Andy David - MVP 157.4K Reputation points MVP Volunteer Moderator
2021-03-28T12:11:25.967+00:00 That should work out of the box. Is there another connector somewhere that is routing back to that server or a smart host?
What does message tracking show?
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Mark TT 146 Reputation points
2021-03-28T12:16:22.023+00:00 anonymous userDavid It say 2016 server reject the message with 554 5.4.12 SMTP; Hop count exceeded - possible mail loop detected on message id .
If i put
A Connector with * domain Exchange 2010
B Connector with * domain Exchange 2016It will use Exchange 2010 first and never go to Exchange 2016.
Thanks.
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Andy David - MVP 157.4K Reputation points MVP Volunteer Moderator
2021-03-28T12:18:48.197+00:00 Not sure what you mean by all that. Can you post an output of :
get-sendconnector |FLDoes this happen will all messages you send externally?
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Mark TT 146 Reputation points
2021-03-28T12:27:49.737+00:00 I can see message tracking, it say Last error: A local group was detected. and stuck on the message queue.
Thanks.
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Anonymous2021-03-29T02:48:06.937+00:00 Hi @Mark TT ,
I think this is because of a setting error of your send connector or Exchange server.
Is the domain of your recipient configured as an authoritative accepted domain?
See this thread: https://social.technet.microsoft.com/Forums/office/en-US/8eb458ae-42e9-4aba-a181-4ffaf627c3e8/last-error-a-local-loop-was-detected-exchange-2010-linux-postfix?forum=exchangesvrsecuremessagingAbout the error: Hop count exceeded - possible mail loop detected, please check this:
Regards,
Lou
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