What are these , Why are they being sent out from the Exchange server ? Why are they showing up in one users mailbox . (looks like they are being forwarded somewhere?????) i cant find it . Been trying to nail this one down for a month . I even created a transport rule but they still show up in the users mailbox.
Exchange server is version 2013 i believe with latest CU.
Can you help?
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15.0.1497.2 via Mailbox Transport; Mon, 31 May 2021 14:39:42 -0500
From: postmaster <postmaster2@alpha.ca>
To: "inboundproxy@contoso.com" <inboundproxy@contoso.com>
Subject: Undeliverable: Inbound proxy probe
Thread-Topic: Inbound proxy probe
Thread-Index: AQHXVlSyP0CKiHZpVUytVAEPaBSEhA==
Date: Mon, 31 May 2021 19:39:41 +0000
Message-ID: <79fee771-8fe2-4b5e-970e-a3791766ea6a@Exchange.alphagroup.local>
References: <c118d632a7744b0d872b52b3475ebcc4@EXCHANGE.alphagroup.local>
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