Mails send but not by me

[LunarNguyen]

Dear reader,

Today I logged in to my email acc. and got 7000 messages that were sended back. I didnt send any message. YEsterday everything was fine. Now some bot/body keeps sending mails with my @omai.nl acc I think I got hacked. How can I stop this??

This is what the mail looks like:

Mail delivery failed: returning message to sender
Afzender   Mail Delivery SystemAdd contact
Ontvanger   christina_nunez@omai.nlAdd contact
Datum   Vandaag 22:35
Contactfoto
Berichtinhoud
This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  zingaro67@hotmail.com
    Unrouteable address
Reporting-MTA: dns; s162.webhostingserver.nl

Action: failed
Final-Recipient: rfc822;zingaro67@hotmail.com
Status: 5.0.0
Onderwerp   We're Perfect Match
Afzender   Christina Nunez
Ontvanger   zingaro67@hotmail.com
Datum   Vandaag 22:35


Hello! Pay me a visit for f@cking!
Do you prefer my pu$$y shaved!
Kiss me all over Look what hottie you gonna f@ck

Kiss ya


Please help

[SKaero]

Try changing your password.

[LunarNguyen]

Already tried. Bot is still sending strong...

[SKaero]

It may not be sending though your account, it maybe forging the from header to make mail look like it was sent by you. Check the email headers of the bounce back mails to see if its actually coming from your server. Also keep in mind that if you do stop the bot you'll most likely keep getting backscatter for a while (days) while mail queue clear out.