ocrm2.pearson.com has no AAAA records.
Apex domains cannot have CNAME records.
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SFMC-04PgJiDpCuYTD6bl7WdnVjIhHpNAean-tX3yLVj2
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SFMC-9f6UCOJ5pR4QS0cHg2dh8S4WiCAY2ghkeZebRfDq
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SFMC-buXZNPpEs2T3YPwXw5R8XE1YO__wUCRCMr4Nltre
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SFMC-cV6j87xxGokxCIvqjnBrbqBsLzFdSx--V2vRu9-t
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SFMC-vtKhlPPEUlIlUQAweP-uV3p9PYxipQZnar9j8hlO
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SFMC-ZnxvNX4I9-WML5TL7qf-hvz7nl3hXB8b3dVPvGoi
spf2.0/pra include:cust-senderid.exacttarget.com -all
Zone apex
Start of authority
Email
Serial
59
Refresh
15m
Retry
15m
Expire
30d
Negative cache TTL
15m