All of a sudden I have begun receiving multiple DMARC reports back from client domains every night. Most were in .gz files which I could not open. I finally received one in XML and was able to open it and they are being generated from Constant Contact mail servers. I have no idea why this started, what is causing it and CC's support team was unable to provide me with any assistance. I have DKIM set up and it was working prior to a few weeks ago.
Has anyone encountered this? Any insight or suggestions?
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