Hi all sorry for late reply and thanks for the feedback,
had some urgent stuff with our daily jobs.

Yesterday we noticed that the antivirus / antispam crashed
so we restarted the services and the emails queue 'flushed' alone slowly.

Now everything should work as usual, we'll upgrade the RAM on the VPS
asap ..

Also updated the canary file, sorry for being late and causing rightful worries!

TY