fix: prevent danakcorp.com domain to register

src/modules/domains/services/dns.service.ts

@@ -21,7 +21,7 @@ export class DnsService {
 
   private readonly mailServerDomain: string = "mail.danakcorp.com";
   private readonly serverDomain: string = "danakcorp.com";
-  private readonly spfRecord: string = `v=spf1 mx include:${this.serverDomain} ~all`;
+  private readonly spfRecord: string = `v=spf1 a mx include:${this.serverDomain} ~all`;
   // private readonly dmarcRecord: string = `v=DMARC1; p=quarantine; rua=mailto:dmarc@${this.serverDomain}; ruf=mailto:dmarc@${this.serverDomain}`;
 
   private readonly resolveTxt = promisify(dns.resolveTxt);