Outlook - redirect email with certain attachment types to sub-folder

We have Outlook 2010, 2013 and 2016 clients connected to hosted exchange.  Every now and then we get a flood of emails through from random addresses where the attachments have already been stripped and replaced with a *orig-filename*.zip.txt or *orig-filename*.pdf.txt file by the host's spam filters.

I have contacted the hosted provider many times to request server side rules to redirect any emails with these attachment types to a quarantine mailbox, or even just add a prefix to the subject line so that we can add client-side rules based on subject, however such requests are always ignored or rejected as not possible.

We have tried using VBA - file attached for reference - however it seems to just stop working after a few days or weeks for reasons unknown.

Is there any other way of achieving specifically this within Outlook, or OWA?

I have found users play around with or disable any obvious third party tools that add a toolbar or extra icons - especially if they perceive Outlook to be slowing down, so would like something unobtrusive!  Unfortunately, the anti-virus we use doesn't have an Outlook spam add-in.

Thanks in advance, any advice much appreciated!
vba.txt
fourthgenAsked:
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BillBondoConnect With a Mentor Commented:
Might help. I used a forwarding vba script but I needed to add the module to outlook vba for it to work. It looked for NDR's so you would need to alt it for extensions. Perhaps your code will work with the module. Setup through rules not sure if it was client side or server side. The module is needed to be able to select a script when creating a new rule.
Something I have been working on.
vba.JPG
undeliv.txt
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fourthgenAuthor Commented:
Sorry for late response BillBondo, I've not had a chance to check whether module is there or test NDR script yet but appreciate the input.  Will work backwards from the script you've provided and keep fingers crossed!
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BillBondoCommented:
Seemed to work ok when I tested on my outlook.
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