Exchange 2013 sending anonymous spam


my queue is full of outgoing emails an there are no sender ( < > )

Any sugestion??

Xavi ViñasAsked:
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Pune TechConnect With a Mentor Commented:
Yes two possiblitys,

1) your server is open relay , check the same using run open relay test.h

2) Any internal desktop on your network is infected with virus  and the same is sending high spam mails to your server , download exmon tool and check which desktop is sending high traffic to exchange accordingly scan that computer for virus or remove from network
Pune TechCommented:

Can we know what was the issue ?

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