Gibberish emails

[Brendan Ryan]

I got two emails from the SW-L at ADMIN.HUMBERC.ON.CA address that were
gibberish.  The first one looked like this

D32ghTFoIQFavLAmMvFdHyhlDGNkqhfCOIUDeLEAVtAiB85x0MJS+Ef7SecOCcgd3SCUoWJ0oQiL
Y5wUDsQaS8jjWFHwiSiOdQte+sRYBzhKF1IhkDUZZVdMY8BOsFCEOBzpW3zMARFxpIfqJIAbs9iG
/hbwZQQj2OqYK+jVEeKVilvQS1/78obqDoGAGxghYIxykkbyppsltZBCF5qOCafRyogBlFXwgJSI

and was 127 kb long.  The second one look like this

///AAAA////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////
/////////////////////////8/Pz/////////////f39///////Wlpa/wAAAP8AAAD/////////
////////////////////////////////////////////////////////////////////////////

and was 57 kb long.
Does anyone have any idea what they were?  I thought that someone sent
me the source code of the sign writing program and didn't attach it
correctly so I put the gibberish into a file and tried renaming it as a
zip file and then as a exe file, but didn't get anything to work.

Brendan Ryan