Files
dcrouter/ts/email/email-dns-records.ts

54 lines
1.4 KiB
TypeScript

import type {
IEmailDnsRecord,
TDnsRecordStatus,
} from '../../ts_interfaces/data/email-domain.js';
type TEmailDnsStatusKey = 'mx' | 'spf' | 'dkim' | 'dmarc';
export interface IBuildEmailDnsRecordsOptions {
domain: string;
hostname: string;
selector?: string;
dkimValue?: string;
mxPriority?: number;
dmarcPolicy?: string;
dmarcRua?: string;
statuses?: Partial<Record<TEmailDnsStatusKey, TDnsRecordStatus>>;
}
export function buildEmailDnsRecords(options: IBuildEmailDnsRecordsOptions): IEmailDnsRecord[] {
const statusFor = (key: TEmailDnsStatusKey): TDnsRecordStatus => options.statuses?.[key] ?? 'unchecked';
const selector = options.selector || 'default';
const records: IEmailDnsRecord[] = [
{
type: 'MX',
name: options.domain,
value: `${options.mxPriority ?? 10} ${options.hostname}`,
status: statusFor('mx'),
},
{
type: 'TXT',
name: options.domain,
value: 'v=spf1 a mx ~all',
status: statusFor('spf'),
},
{
type: 'TXT',
name: `_dmarc.${options.domain}`,
value: `v=DMARC1; p=${options.dmarcPolicy ?? 'none'}; rua=mailto:${options.dmarcRua ?? `dmarc@${options.domain}`}`,
status: statusFor('dmarc'),
},
];
if (options.dkimValue) {
records.splice(2, 0, {
type: 'TXT',
name: `${selector}._domainkey.${options.domain}`,
value: options.dkimValue,
status: statusFor('dkim'),
});
}
return records;
}