How to stop spoofed email addresses?

[K88]

I have noticed that user in contact list are getting message from my address. Some one is spoofing email using my email address. can any one tell me how to stop spoofed email addresses? Is there any software to spoof an email address.

[Macarenas]

is possible because Simple Mail Transfer Protocol (SMTP), the main protocol used in sending e-mail. Email spoofing may occur in different forms, it doesn't show the proper address of sender to the receiver.(not the correct source) E-mail spoofing is a term used to describe e-mail activity in which the sender address and other parts of the e-mail header are altered to appear as though the e-mail originated from a different source. Try this to solve the problem : Best Way To Control Spam

[vishodhan]

PhishGuard for Firefox 2.1.131 : PhishGuard harnesses the collective observations of Internet users to detect and rapidly disable Internet Phishing or Spoofing attacks designed to steal critical financial data. Phishing attacks use fraudulent websites and emails that mimic well-known organizations in order to trick unsuspecting Internet users.
Download PhishGuard for Firefox 2.1.131

[JonathanD]

E-mail spoofing is the forgery of an e-mail header so that the message appears to have originated from someone or somewhere (incorrect source in message) other than the actual source . E-mail spoofing is a technique commonly used for spam e-mail and phishing to hide the origin of an e-mail message. Use SecurityGateway for Exchange / SMTP 1.1.3 it provides affordable email security with a powerful spam filter that serves as a Microsoft Exchange firewall or SMTP firewall. It also protects against viruses, phishing, spoofing, and other forms of malware that present an ongoing threat to the legitimate email communications of your business.