Can i vent my exhaust fan the basement bathroom to the sewer vent stack or is it safer to dump in the garage?

First off lose the caps. We don't yell at one another in here,
NO! You can't tie the fan back to the sewer. Any place is better, Good luck, Tom

Sorry about Caps, The closest wall that I have is the garage wall next to the heat duct.
Would it be OK to put moisture in the garage, it is a 3 car?

Of course it would be better to exhaust it outside but I remember back in the 50's a lot of contractors were exhausting them in the attic.
Could you possibility get to a outside wall by going through the attic? Actually, when you stop to think about the moisture a car will bring in during a rain or snow storm the moisture from the fan doesn't sound all that bad. Good luck, Tom