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Hybrid Exchange change of SMTP relay connector
Hi All So we have Hybrid Exchange environment, with few 2010 Exchange boxes on-prem, 1x Exchange 2016 on-prem (as the hybrid) and O365 tenant. Until now we were using one of the EX2010 boxes as ...
Whenever I setup a connector for this purpose on an Exchange 2016 Server, I always set the security tab options as follows;
I would definitely double and triple check your firewall rules too. Do you definitely have the Exchange Online IP's all allowed for the Exchange 2016 server?
Hmm, that's interesting. Are you able to share a screenshot of the receive connector you have created on your Exchange 2016 server please?
Also, could you share the socket error you are seeing too?