caddy/caddytest/integration/caddyfile_adapt/tls_automation_policies_3.txt

# https://caddy.community/t/caddyfile-having-individual-sites-differ-from-global-options/11297
{
	local_certs
}

a.example.com {
	tls internal
}

b.example.com {
	tls abc@example.com
}

c.example.com {
}
----------
{
	"apps": {
		"http": {
			"servers": {
				"srv0": {
					"listen": [
						":443"
					],
					"routes": [
						{
							"match": [
								{
									"host": [
										"a.example.com"
									]
								}
							],
							"terminal": true
						},
						{
							"match": [
								{
									"host": [
										"b.example.com"
									]
								}
							],
							"terminal": true
						},
						{
							"match": [
								{
									"host": [
										"c.example.com"
									]
								}
							],
							"terminal": true
						}
					]
				}
			}
		},
		"tls": {
			"automation": {
				"policies": [
					{
						"subjects": [
							"b.example.com"
						],
						"issuers": [
							{
								"email": "abc@example.com",
								"module": "acme"
							},
							{
								"email": "abc@example.com",
								"module": "zerossl"
							}
						]
					},
					{
						"issuers": [
							{
								"module": "internal"
							}
						]
					}
				]
			}
		}
	}
}