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DomainKeys Identified MailThực đơn
DomainKeys Identified MailLiên quan
DomainKeys Identified MailTài liệu tham khảo
WikiPedia: DomainKeys Identified Mail http://dkim.org/ https://tools.ietf.org/html/rfc5585 https://tools.ietf.org/html/rfc6376 https://tools.ietf.org/html/rfc6376#section-1.5