Jenna Jameson Foreclosure -- Mansion Auctioned Off ... Enjoy My Sloppy Seconds

Jenna Jameson has lost her home to foreclosure, TMZ has learned.

The Hollywood Hills mansion -- which Jenna purchased in 2006 for $2.7 million -- hit the auction block earlier this month ... and was sold off for $1.85 million.

According to official docs, Jenna's bank notified her in February that she had defaulted on her mortgage payments to the tune of $56,918.

Jenna subsequently listed the home for $1.899 million but failed to find a buyer. Her bank then obtained a final judgment against her in June for the full amount of her mortgage ... $2,027,816.

Jenna never paid, so the home was foreclosed on and sold at auction.

Sources tell us, Jenna had rented out the home for years -- while she lived in Orange County with her ex Tito Ortiz -- but the home recently sustained significant water damage, and Jenna decided it wasn't worth the expense to fix ... so she let it go into foreclosure.