librenms-librenms/includes/polling/applications/mailscanner.inc.php

<?php

// Polls MailScanner statistics from script via SNMP

use LibreNMS\RRD\RrdDefinition;

$name = 'mailscannerV2';
$options = '-Oqv';
$oid = '.1.3.6.1.4.1.8072.1.3.2.3.1.2.11.109.97.105.108.115.99.97.110.110.101.114';

$mailscanner = snmp_get($device, $oid, $options);

[$msg_recv, $msg_rejected, $msg_relay, $msg_sent, $msg_waiting, $spam, $virus] = explode("\n", $mailscanner);

$rrd_name = ['app', $name, $app->app_id];
$rrd_def = RrdDefinition::make()
    ->addDataset('msg_recv', 'COUNTER', 0, 125000000000)
    ->addDataset('msg_rejected', 'COUNTER', 0, 12500000000)
    ->addDataset('msg_relay', 'COUNTER', 0, 125000000000)
    ->addDataset('msg_sent', 'COUNTER', 0, 125000000000)
    ->addDataset('msg_waiting', 'COUNTER', 0, 125000000000)
    ->addDataset('spam', 'COUNTER', 0, 125000000000)
    ->addDataset('virus', 'COUNTER', 0, 125000000000);

$fields = [
    'msg_recv'     => $msg_recv,
    'msg_rejected' => $msg_rejected,
    'msg_relay'    => $msg_relay,
    'msg_sent'     => $msg_sent,
    'msg_waiting'  => $msg_waiting,
    'spam'         => $spam,
    'virus'        => $virus,
];

$tags = compact('name', 'app_id', 'rrd_name', 'rrd_def');
data_update($device, 'app', $tags, $fields);
update_application($app, $mailscanner, $fields);