Doubt regarding bounce. Bounce not working?

I am using phpList version 3.2.1 and PHP version 5.3.10

I am facing an issue with bounces.
I have the following emails in my subscriber list

I have an email address in my list that is not existing.
Ideally after the campaign is sent this mail should bounce because this email doesnt exist at all.
But the stats on the stats overview page show as the following:

I have set up my bounce mailbox and also the settings as follows:
$bounce_protocol = ‘pop’;


$bounce_mailbox_host = ‘’;
$bounce_mailbox_user = ‘’;
$bounce_mailbox_password = ‘password@1234’;

$bounce_mailbox_port = “995/pop3/ssl/novalidate-cert”;

$bounce_mailbox = ‘/var/mail/listbounces’;

$bounce_mailbox_purge = 1;

$bounce_mailbox_purge_unprocessed = 1;

$bounce_unsubscribe_threshold = 5;

I also do a Process Bounce check by going to the Manage Bounces page manually. But it is still not recording that the email has bounced.

Can anyone help me with what I am doing wrong or what more should I be doing to see the bounce stat working on the stats overview page?

All the help is appreciated. Thanks.

Have you come right? I have the same issue

Tengo el mismo problema y veo que nadie te contesta.
Ya lo pudiste resolver?