modules:
    http_2xx:
        prober: http
        timeout: 5s
        http:
            valid_http_versions:
                - HTTP/1.1
                - HTTP/2.0
            preferred_ip_protocol: ip4
            ip_protocol_fallback: true
            follow_redirects: true
            enable_http2: true
        tcp:
            ip_protocol_fallback: true
        icmp:
            ip_protocol_fallback: true
            ttl: 64
        dns:
            ip_protocol_fallback: true
            recursion_desired: true
    smtps:
        prober: tcp
        timeout: 20s
        http:
            ip_protocol_fallback: true
            follow_redirects: true
            enable_http2: true
        tcp:
            preferred_ip_protocol: ip4
            ip_protocol_fallback: true
            query_response:
                - send: "EHLO prober\r"
                - expect: ^250-
                - send: "QUIT\r"
            tls: true
            tls_config:
                insecure_skip_verify: true
        icmp:
            ip_protocol_fallback: true
            ttl: 64
        dns:
            ip_protocol_fallback: true
            recursion_desired: true