import { SecurityResults } from './types';
export declare class DNSChecker {
    check(domain: string, results: SecurityResults): Promise<void>;
    private getAllDNSRecords;
    private checkDNSSecurity;
    private checkRealDNSSEC;
    private checkEmailSecurity;
    private checkSPF;
    private checkDKIM;
    private checkDMARC;
    private checkBIMI;
    private checkNSConfiguration;
    private addDNSIssue;
}