"Occasionally I get a bounced, or rejected email sent by someone else, with my email address in the From line. Do I have reason to be concerned? Comcast techs say it is just spam. I find that very weird."...
For best results, use just ONE or TWO keywords. This search engine looks for all words in any order. To search for an exact phrase, enclose the phrase in quotes. You may also use AND, OR, and NOT keywords to specify boolean expressions. For example:
"format drive"
spyware OR virus
phone NOT cell