What Exchange 2010 SCL values do you use?

Vanilla_Ice

Vanilla_Ice

Vanilla_Ice

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Ipswich
Hi,

I have an SBS 2011 server and am struggling to reduces levels of spam.

I am not (currently) using any third party spam protection, just the built-in antispam which comes as part of Exchange.

Is this simply not up to the job by itself? I install the definition updates from MS as soon as possible, but this is only once a fortnight.

I have changed SCL values to try and reject more spam, as well as change the junk threshold SCL so less ends up in my inbox, but this doesn't appear to make muck of a difference.

Am I missing a trick somewhere? Or can anyone offer suggestions for alternative/additional spam protection?

Please help!
 
Thank you LizardKing.

Sorry, I should have mentioned I currently use a SpamHaus, SpamCop and Surriel as IP Block List Providers.

Is Mailmarshal still available? A quick Google suggests it has been renamed/replaced?
 
Vanilla_Ice said:
Hi,

Am I missing a trick somewhere? Or can anyone offer suggestions for alternative/additional spam protection?
Click to expand...

I support several clients with SBS in various flavours. I don't install Anti virus/spam software on the server itself and all Exchange spam filters are at their defaults - instead I routinely use mail hygiene services to clean incoming mail so mail is clean before it hits the server and internal network.

This is obviously an extra monthly cost, but I have had good results with Postini and Exchange Defender - both work in similar ways: MX records are set to the mail hygiene service and incoming mail is accepted and then filtered there. Clean mail is sent on to the server and users receive a daily message listing the spam that has been held back due to it being deemed spam etc., which they can then release if required.

Additionally I send out mail through these services using a send connector, thus ensuring the client is not a source of spam/viruses.

A couple of bonuses of these services is that you can have the server on a dynamic WAN IP address (some of my clients are set up like this) as you are not sending out mail directly from the server, the services will "spool" mail if your connection goes down for whatever reason and you can lock down your edge firewall and only accept incoming/outgoing mail from/to the mail hygiene service.

There are quite a lot of these types of services around and it may be something to consider if you are really struggling with spam.
 
As far as filtering goes have to really commend Mimecast, a lot of my bigger clients use this and it works well, also gives you online archiving, journaling and DR email. For smaller sites we use Barracuda Spam Filter appliances and they work really well, not surprised the barracuda block list is helping!
 
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