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Hello,basically, I'm wondering can I configure ESA to act on TCP reset and place undeliverable email in queue of some kind for up to 72 hours?In between Exchange and ESA there is a firewall which is not MTA capable, but can scan inline for advanced m...
Coming late to this party, but had the same problem recently.
Adding A record of your AD server to your DNS server resolved this problem for me. These two tests were failing with the exact same error you mentioned.
Kerberos check SASL connectivity to...