#define CASE(up, low) case PTK_##up: query->low = v; v[vlen] = '\0'; break;
CASE(HELO_NAME, helo_name);
CASE(QUEUE_ID, queue_id);
#define CASE(up, low) case PTK_##up: query->low = v; v[vlen] = '\0'; break;
CASE(HELO_NAME, helo_name);
CASE(QUEUE_ID, queue_id);