Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
For DMARC to work most efficiently, both sender and receive must enable it and have SPF and/or DKIM enabled.
When an organization does not establish DKIM, email servers that receive the organization’s emails may flag or reject them because authenticity of the organization’s domain cannot be verified.
Source: https://www.esecurityplanet.com/networks/what-is-dkim/