Spam from my email address
I have noticed a few emails caught by various spam filters seem to have come from my email address, but called by a different name. I am sure this is a well-known phenomenon but I don't know much about it and it's time to put a stop to it, since people are not getting my emails as their spam filters are - understandably - telling me to piss off. Is the problem on my computer, the email Server, my ISP?
Can some kind souls enlighten me as to how best to sort it out?