My account is sending spam and I can't stop it!
For almost two months now my account has been sending out hundreds of spam mails to known contacts and also unknown email addresses.
I contacted my domain name provider (nominalia.es) and they advised me to do a few things:
1 Change my email password, as well as the outgoing smtp password (Done. Twice.)
2 Install an antivirus. (I have Avast Mac Security. No viruses or other problems found),
3 Remove my email address from my website. (Done).
Despite having followed all their advice the problem continues as before.
This is so annoying as I am a business user and I'm spamming all my clients as well as friends and family. I need to make this stop. I have thought about abandoning my domain name and starting afresh with a new one, but as a long established business I really don't want to change my web address and email address unless absolutely necessary.
Any help would be much appreciated.
(I wanted to post this in a Mail community, but can't find one. Please move my message if there is a better location for it).
MacBook Pro, OS X El Capitan (10.11.3)