movie about a guy that sends himself postcards from trips signing them with fictive names

So, this is a very long shot, but someone described me a movie she was searching for, a guy that was going in all these trips, and sending postcards to himself and putting them on his refrigerator or something like that. But there was something off about his story, I think he was signing them with other names like he received them from someone else.
So it got me really curious about the plot and I’ve been looking everywhere for it.
Could even be a movie made in Russia, or Ukraine, or France, or anywhere.
Thank you!