[Mailman-Users] strange problem, list prefix suddenly stopped being inserted

[Ricardo Kleemann]

Hi,

I have a number of lists running and they worked fine with the subject prefix for each list.

Suddenly all the distributed messages are no longer showing the subject prefix and I don't understand what could be causing this. 

I'm not sure how to debug it, I don't see any evident errors and the only issue I see is related to the subject.

Thanks
Ricardo