fix: allow underscores in domain labels

test/dnsx.test.tsmodified+17-0

Changes to test/dnsx.test.ts

		⋯186 linesShow the 186 lines above this hunk@@ -187,6 +187,23 @@ describe('DnsClient', () => {
187	187	})).toThrow()
188	188	})
189	189
	190	+ it('should accept underscores in domain labels (DKIM, DMARC, SRV)', () => {
	191	+ expect(() => new DnsClient({
	192	+ domains: ['selector1._domainkey.example.com'],
	193	+ type: 'TXT',
	194	+ })).not.toThrow()
	195	+
	196	+ expect(() => new DnsClient({
	197	+ domains: ['_dmarc.example.com'],
	198	+ type: 'TXT',
	199	+ })).not.toThrow()
	200	+
	201	+ expect(() => new DnsClient({
	202	+ domains: ['_sip._tcp.example.com'],
	203	+ type: 'SRV',
	204	+ })).not.toThrow()
	205	+ })
	206	+
190	207	it('should handle invalid record types', () => {
191	208	expect(() => new DnsClient({
192	209	domains: ['example.com'],