jimtherev,
You've got a lot to learn about the ways of the internet......
This :
But if other people are receiving spam allegedly from your email address – that could be serious, as (just maybe) they have not only your email addy but your password as well. ***in that case change your password, like, NOW***. This means that you will need to adjust your mailbox settings and probably the password settings of your router/modem, otherwise you will have disconnected yourself, which ain’t the object of the exercise. But better safe, huh?
Is fairly useless advice assuming it's just yet another case of impersonation (although you should be changing your password on a regular basis anyway).
You don't need anyone's password to send emails that appear to come from their email address. Anyone could, for example, send a few million spam emails that appear to come from "danny@pprune" ....the only thing you'll know about it is when you see the bouncebacks from email addresses that don't work. In order to obtain responses, the spammers use a combination of "reply-to", phone numbers and websites ....hence they never need access to the original impersonated account.