
How to prevent a trojan from sending emails
My Thunderbird is sending SPAM emails from all my accounts. I want to stop that by letting ME ONLY do the sending, not an automated virus.
Chosen solution
Or it could be something on your PC that isn't using Thunderbird. For example, all a program (good or bad) has to do is open a port to an SMTP server and execute the well-documented protocol. Sometimes I've sent emails this way myself using telnet. (It's kind of clumsy to do it this way but it shows that you don't really NEED an email client to send emails.)
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There is no Outbox. The Outbox (in Outlook Express) used to prevent this problem. Why would that not be a help here?
Are these spam messages in your Sent folder? If not, they are not coming from your computer. Most spammers just borrow your email address and use it for a return address so it appears that they come from you but are sent else where.
FYI: The Outbox is under Local Folders at the bottom of the account listing. Not sure what you think this is going to do to help though.
They are SPAM messages which show the IP of MY computer as the sender! :(
The Outbox should collect all the outgoing email, where it sits for my personal scrutiny. After I have checked it, I can then personally hit the send button. If this applies to all outgoing email, requesting a keyboard entry, then a virus should not be able to send any, without my approval.
Are the spams in your sent folder? If not, then it's probably not using Thunderbird anyway.
There is nothing in my outbox. So, they must have forged my email address AND my IP address. I did not think the latter was possible, because each email should show a trail starting with the IP address from where it was sent.
Chosen Solution
Or it could be something on your PC that isn't using Thunderbird. For example, all a program (good or bad) has to do is open a port to an SMTP server and execute the well-documented protocol. Sometimes I've sent emails this way myself using telnet. (It's kind of clumsy to do it this way but it shows that you don't really NEED an email client to send emails.)
Thanks! That probably explains it. Now I have to figure out how to control that!