How do I forward an e-mail to someone using my contact list?

how can I stop this? I want to continue to use yahoo, but I'm thinking I'll have to switch to another email server.

What can/should I do?

My e-mail contacts have been receiving emails from my address for sales and porno promotions. Is there anything I can do to stop this?

Someone is using my email address to send emails to the contacts in my contact list, as if I had sent them.

Recently an email went out (from my account) with a link promoting cialis or viagra to a list of contacts in my yahoo "Contact" account. The emails weren't found in my outbox, and the list of contacts it had sent it to were never part of a...

I reported this before. Someone is using my email address and they are sending emails to my contact list. Every time this person sends an email, my contact thinks it's me. I don't know how they got my information. Is there a way to stop this?

I have Mail Plus, so I can send messages from a variety of different email accounts. When I add someone to my contact list (I'm using Beta), is there a way to specify that I always want email to that person to be sent from a particular email account...

Someone is spamming my yahoo email contact list using, my email address as the sender trying to sell viagra products. How do I stop or block their actions? It really becoming aggravating.

Someone been using my email address and has sent several emails to my entire contact list. How can I prevent this from happening?