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Hello,We're trying to set up SMTP authentication on Cisco ESA to authenticate with our internal Exchange 2016 servers, but emails do not make it through inbound with error message "Client was not authenticated to send anonymous mail during MAIL FROM"...
Thanks. We do have ESA <-> Exchange working fine without authentication on port 25. We would like to move to authentication between them. Why? Because if there is a more secure option, that's the option we rather use. The options are available to be ...
