Hello!
I have a problem with a specific kind of file type upload on my FTP.
I can upload any type of file that I've tried except if it ends in .pnr
This is the log entry in Serv-U:

And this is from FileZilla:

I have tried this with two different users, that have access to two different directories.
Both user's directory access is configured this way:

If I try with .pnrp or .nrp it works just fine (or basically anything else).
Is there a global setting to restrict file type uploads? The admin guide only talks about restricting it under Directory Access.
EDIT: I tested it through https also, no difference. Also, this is tested locally so no firewall involved.