Messages in code

Hi,

Recently I received an email in my Mail app that appeared in the following code:

--Apple-Mail=_A92FC949-7657-4C56-B26B-5FA7291A8BF2

X-Apple-Content-Length: 1050

Content-Type: text/plain;

charset=us-ascii

Content-Transfer-Encoding: quoted-printable

--Apple-Mail=_A92FC949-7657-4C56-B26B-5FA7291A8BF2

X-Apple-Content-Length: 1050

Content-Type: text/plain;

charset=us-ascii

Content-Transfer-Encoding: quoted-printable

--Apple-Mail=_A92FC949-7657-4C56-B26B-5FA7291A8BF2

X-Apple-Content-Length: 1050

Content-Type: text/plain;

charset=us-ascii

Content-Transfer-Encoding: quoted-printable

What happened and what does this mean? Does that mean the other person's email has been compromised (and I should let them know) or is there something wrong with my owm Mail?

Thanks for your help!

JC