Reply to Remixes & Copyright

Hi DJTT!

I've been remixing for quite a while now and I wanted to upload some of my work on soundcloud.
When it finishes it says that the songs contain parts of other songs that are protected with copy write.
I knew that ofcours, but I tought Bootlegs & Mashups didn't fall under this copy write infrightment.

How do I publish my own remixes?

Thx guys!

Cheers