How to stop receiving spam emails into outlook 2010


We use exchange 2007 and outlook 2010.
We have a mail box and this mail box is shared for 5 users  and  this mail box is set up as a secondary mailbox with these 5 users. We get many spam mails every day on this mail box.

Please let me know a best way of blocking this spams.

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Will SzymkowskiSenior Solution ArchitectCommented:
Typically you should have something in your perimeter network like a anti-spam appliance etc. If this is not catching spam for a specific mailbox what you can try and do is create a Transport Rule and set the SCL (spam confidence level) to 5,6 or 9.

See screenshots below...
You do not have to use SCL of 9 you can use 5 or 6 as well. Setting the SCL to 9 100% means this is flagged as spam. See the below link for more details on the SCL levels and what they mean.


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lianne143Author Commented:
Thanks for the above suggestion to block the spam in the exchange server level. I was thinking of doing this in another way , please see below. Will this work.

The shared mail box is called as CORIN. If I log in as a CORIN into one of a PC and open the outlook 2010 and if I add all Spam domain names to the Block Senders list, I hope these spams will get blocked on this mail box level if I am right.

We have 6 users who share this mail box as a secondary mailbox. If  a spam is received on one of the users CORIN shared mail box. Is there a way for them to add this  Block senders list \ do I need to ask  them to send the spam mail to me so that I login as a CORIN and add the domain to the Block senders list.

Will SzymkowskiSenior Solution ArchitectCommented:
You cannot update the block senders list while having the mailbox added as a secondary/additional mailbox. You have to log directly into this mailbox itself. So yes they will have to provide you with the addresses and you will need to manually enter them while being logged in directly.

However this would be easier to manage from a transport rule on the Exchange server in my opinion.

lianne143Author Commented:
Thanks Will

Much appreciated
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