Hi,
Yesterday I had to create a new Edge Subscription due to an expired certificate, after that all external messages stopped to be received with an Unable to Relay NDR error.
This part I have fixed but now I am getting this error for all extenal messages:
#554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured in a loop ##
Anyone could help, please?
Laercio Pires