I get a mailer-daemon message?

I get a mailer-daemon message informing me that my e mail wasn't sent, its some kind of marketing text about iphone, of course I did not write it. It only happens when I get emails from some institutions, as if it is an automatic response to it, it does not happen with my friends, or any personal e mails. What should I do?

Someone is using your address to send out spam

Things to check if your email has been compromised

Change Password:

Other things to check:

Things to do if your ID continues to send out spam

Someone at one time or another has got ahold of your email and has spammed your phone with numerous text messages. This is why many messages are going to your phone. If you see alot of these being inputted into your phone, it is wise to just delete them.

So sorry to hear about this! Typically, the type of activity you described occurs when an account's log-in credentials are compromised via a phishing site or by keylogging malware installed on a PC. Once an ID/password is captured, bots can then access the account remotely to send the spam messages. Malware programs typically are designed so that no copies of the sent messages are saved. The failure notices or mailer-daemon notices you may have seen occur because some of the email addresses in your Contacts may no longer be valid.

Once you've changed the password it is unlikely this issue will continue to occur. Nonetheless, scanning your computer(s) with an updated anti-virus program is always recommended. You may want to search specifically for programs designed specifically to eliminate malware as many larger anti-virus programs do not include that feature.

Hope this helps!