I have great service with IT people because I do this by default. I’ll have already tried some steps myself, so I’ll give them info about what exactly works, doesn’t work, and things that I can or can’t do that might be related to the main issue.
They really appreciate the detail.
I just started using Proton mail’s aliases for that and love it. If I see a bunch of spam coming to one particular alias, I’ll just delete it and make a new one. So far, it’s been great