e mail problems

Good morning all,
Strange occurance this am instead of the usuall 40 to 50 spam e mails a day i get i found 256. The returne path on all these comes back to my e mail address. Here is a small sample:
Apr 05 04:22 Mail Delivery System Undelivered Mail Returned to Sender 6.1 kb
37. N+ Apr 05 17:21 postmaster@am.sony.com Delivery Status Notification (Failure) 5.6 kb
38. N+ Apr 05 04:20 <mis@comres.org> Undeliverable: 7.2 kb
39. N+ Apr 05 03:19 Symantec_Mail_Security_for_SMT… Returned mail 4.2 kb
40. N+ Apr 05 04:19 postmaster@fullcircleadoptions… Delivery Status Notification (Failure) 3.7 kb
41. N+ Apr 05 01:19 postmaster@jwtel.com Delivery Status Notification (Failure) 4.4 kb
42. N+ Apr 05 08:18 MAILER-DAEMON@smtp.msi2000.com failure notice 3.6 kb
43. N+ Apr 05 02:17 MAILER-DAEMON@u15179924.online… failure notice 2.6 kb
44. N+ Apr 05 10:17 postmaster@paysroimorvan.com Notification d'=?unicode-1-1-utf-7?Q?+AOk-tat de remise (+AO… 4.6 kb
45. N+ Apr 05 08:16 MAILER-DAEMON@smtp-in-6.star.n… failure notice 3.6 kb
46. N+ Apr 05 09:16 Mail Delivery Subsystem Returned mail: see transcript for details 4.3 kb
47. N+ Apr 05 08:15 MAILER-DAEMON@communique-de-pr… failure notice 2.5 kb
48. N+ Apr 05 08:15 MAILER-DAEMON@seogumail.net failure notice 3.8 kb
49. N+ Apr 05 11:15 Mail Delivery System Undelivered Mail Returned to Sender 3.3 kb
50. N+ Apr 05 10:15 MAILER-DAEMON@www.sox03.nl failure notice 3.5 kb

Can anyone tell me whats going on ????? I have run updated anti virus and maleware scans and come up clean. another 131 more have been added since i started this thread. Please help.

Thanks in advance,
Dan (

 

It appears your email has been hijacked and is sending out spam using your email address.
I'm surprised your AntiVirus didn't catch it, but the viruses that they catch are only the ones they know about.
Perhaps you got hit with something new.