switch (r) {
    case SPF_ME:       buffer_puts(buffer_1,"loopback"); break;
    case SPF_OK:       buffer_puts(buffer_1,"pass"); break;
    case SPF_NONE:     buffer_puts(buffer_1,"none"); break;
    case SPF_UNKNOWN:  buffer_puts(buffer_1,"unknown"); break;
    case SPF_NEUTRAL:  buffer_puts(buffer_1,"neutral"); break;
    case SPF_SOFTFAIL: buffer_puts(buffer_1,"softfail"); break;
    case SPF_FAIL:     buffer_puts(buffer_1,"fail"); break;
    case SPF_ERROR:    buffer_puts(buffer_1,"error"); break;
    case SPF_SYNTAX:   buffer_puts(buffer_1,"IP address syntax error"); break;
    default:           buffer_puts(buffer_1,"undefined"); break; 
  }

1. history

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