Rejected messages from addresses I've never heard of

QUESTION:

I just started my computer this morning and I had 9 undeliverable/ spam/ rejected messages from addresses I never heard of. I have a feeling I am being hijacked to send spam. Please advise.

ANSWER:

It’s someone pretending to be you when they send out their spam messages. It never touches your computer. The recipient’s server sends the rejections to you because that’s where the spam message is pretending to be coming from.

The first thing you need to do is change your password to something stronger than what you've probably been using.  If it continues, there’s really nothing you can do short of getting a new email address.