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Exchange 2013 sending anonymous spam

Posted on 2016-11-21
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Last Modified: 2016-11-22
Hello,

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

Any sugestion??

Thanks
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Question by:Xavi Viñas
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Pune Tech earned 2000 total points
ID: 41895522
Yes two possiblitys,

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

http://mxtoolbox.com/diagnostic.aspx

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

https://blogs.technet.microsoft.com/exchange/2016/02/16/exchange-2013-and-2016-exmon-tool-is-now-available/
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by:Pune Tech
ID: 41895558
Hi,

Can we know what was the issue ?

Thanks.
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