FireEye

FireEye is a spam filter, block list, and firewall solution promoted for businesses. Mail is routed through mailservers owned by FireEye before it's passed along to the recipient domain's mailservers for final delivery. The recipient is able to manage a lot of delivery settings such a allow lists, so it helps to ask the recipient to run the described debugging tests in the user guide to identify and resolve delivery issues.

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550All 550 codes →

smtp;550 5.7.26 <example@example.com>: ETP205 DMARC Failure for domain

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