Trojaner-Board - Email Adressbuch gehackt?

Hallo ich bekomme manchmal bis zu emails dieser Art:
Betreffzeile: Mail Delivery System <Mailer-Daemon@snshared03.slicenetworks.com>
This message was created automatically by mail delivery software.
A message that you sent has not yet been delivered to one or more of its recipients after more than 24 hours on the queue on snshared03.slicenetworks.com.

The message identifier is: 1bAV28-00078t-V8
The subject of the message is: don't miss this
The date of the message is: Wed, 8 Jun 2016 07:23:46 +0300

The addresses to which the message has not yet been delivered are:

drjkasten@aol.com
host mailin-04.mx.aol.com [64.12.88.131]
Delay reason: SMTP error from remote mail server after end of data:
421 4.2.1 : (DYN:T1) https://postmaster.aol.com/error-codes#421dynt1
Juergen.Schopper@th-nuernberg.de
host mailgate.cs.fh-nuernberg.de [141.75.25.50]
Delay reason: SMTP error from remote mail server after RCPT TO:<Juergen.Schopper@th-nuernberg.de>:
451 Greylisting in action, please come back later

No action is required on your part. Delivery attempts will continue for some time, and this warning may be repeated at intervals if the message remains undelivered. Eventually the mail delivery software will give up, and when that happens, the message will be returned to you.
Alle angeführten emails stammen aus meinem Adressbuch.
Es gab auch schon manche, die mich anmialten, da ich kenntlich war als Verursacher.
Was ist da los?
Hilfe.
Meine beruflichen Kontakte sind auch in den Händen dieses Virus.

Habe PC Windows 10 und Kaspersky Internet security auf dem neuesten Stand.
Hilfe
DANKE
Markus