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Tom Kern
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451 4.4.0 Primary target IP address responded with: "451 5.7.3 Cannot achieve Exchange Server authentication."
Posted
over 3 years ago
by
tom kern
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So this is a quick post but worth mentioning as these cases seem to crop up every once in a while. The error in the title usually occurs after creating a second receive connector dedicated for an app relay or some other anonymous type access. So...