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216.73.216.1
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mail-yandex-ru-production-external.stable.qloud-b.yandex.net
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mail-yandex-ru-production-external.stable.qloud-b.yandex.net
SPF record
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No SPF record
No SPF record found for mail-yandex-ru-production-external.stable.qloud-b.yandex.net
check TXT records