\vfill throws my boxed text at the end and cannot be read

Question

I'm trying to place a boxed text at the end of the page, but \vfill sends my box out of the page. There is another command that can do the same but in the way I need it?

This is my code:

\documentclass[12pt,letterpaper]{article}
\usepackage{background}
\usepackage{framed}
\usepackage[latin1]{inputenc}
\usepackage[spanish]{babel}
\usepackage[total={19.5cm,26.5cm},left=0.7cm,top=3cm]{geometry}

\SetBgScale{1.05}
\SetBgAngle{0}
\SetBgContents{\includegraphics{image/bg.eps}}

\begin{document}

\font\grande=cmr10 at 30pt\vphantom{\grande M} %Places text below the top gray line

Random text.
\begin{framed}
Boxed text.
\end{framed}
\end{document}

The image places a 15mm box on the bottom edge as the image shows.

Answer 1

The question was later edited to so the example showed the problem.

The geometry settings that you have specified result in a negative bottom margin and the warning

Package geometry Warning: `bmargin' results in NEGATIVE (-44.38629pt).
    `height' or `tmargin' should be shortened in length.

so when you use \vfill or just add enough text to fill a page, it will go 44pt off the bottom of the page.

A setting of for example

\usepackage[paperwidth=19.5cm,paperheight=26.5cm,left=0.7cm,top=3cm]{geometry}

avoids the warning and keeps the boxed text on the page, even if preceded by \fill

---

Original answer

\documentclass[12pt,letterpaper]{article}
\usepackage{framed}
\usepackage[latin1]{inputenc}
\usepackage[spanish]{babel}
\begin{document}
Random text.

\vfill

\begin{framed}
Boxed text.
\end{framed}
\end{document}

Answer 2

As far as the message "Warning: `bmargin' results in NEGATIVE (-n)" is concerned, I solve it by reducing the height. E.g.

\geometry{a4paper, total={200mm,280mm}, left=1cm, top=1cm}

280 is the max accepted height in my case. It will most probably be different in your case.