Or, if you are just receiving (not sending as @yahoo.com), you don’t need an SPF record for them. The fix in 2019 involved removing obsolete aol.com SPF includes.

: Multi-factor authentication (MFA) or Two-Step Verification is the most effective defense against credential stuffing, as a stolen password alone will not grant access. audit your accounts for specific signs of unauthorized access? Largest collection ever of breached data found | Hacking

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Or, if you are just receiving (not sending as @yahoo.com), you don’t need an SPF record for them. The fix in 2019 involved removing obsolete aol.com SPF includes.

: Multi-factor authentication (MFA) or Two-Step Verification is the most effective defense against credential stuffing, as a stolen password alone will not grant access. audit your accounts for specific signs of unauthorized access? Largest collection ever of breached data found | Hacking

The search result "gmailcom yahoocom hotmailcom aolcom txt 2019 fix" typically refers to combo lists