import dns.resolver
import dns.query
    
def lambda_handler(event, context):

    res = dns.resolver.Resolver()
    res.timeout = 5
    res.lifetime = 30
    res.nameservers = ['10.135.6.95','10.135.6.96'] 
    results = res.query('_ldap._tcp.hkg.yourdomain.com', 'SRV', tcp=True)
    print('_ldap._tcp.hkg.yourdomain.com:')
    for line in results:
    	print(line.to_text())

    results = res.query('_kerberos._tcp.hkg.yourdomain.com', 'SRV', tcp=True)
    print('_kerberos._tcp.hkg.yourdomain.com:')
    for line in results:
        print(line.to_text())

    return {}