asked on 5/17/2011

discard emails that are not addressed to non exchange accounts?

how do i discard emails that are addressed to non exchange accounts?

or to put another way: If the addressee does not have a exchange mailbox or alias i want to discard the email.

Exchange Outlook

Last Comment

resolver1

5/20/2011

Alan Hardisty

5/17/2011

You need to enable Recipient Filtering.

What version of Exchange do you have?

Exchange 2003:
http://www.msexchange.org/tutorials/sender-recipient-filtering.html

Exchange 2007:
http://technet.microsoft.com/en-us/library/aa998898(EXCHG.80).aspx

Exchange 2010:
http://technet.microsoft.com/en-us/library/bb125187.aspx

resolver1

5/18/2011

ASKER

Sorry I should have put the Exchange version.

We using Windows 2008 SBS server which is Exchange 2007. Do we have a edge server? We only have one sbs server which has exchange installed. We dont have Exchange is not installed on a machine on the perimeter of our networks, we use a device called netpilot which is a firewall/forwards all SMTP traffic to exchange on the sbs server.

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Alan Hardisty

5/18/2011

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resolver1

5/18/2011

ASKER

Type in get-RecipientFilterConfig and RecipientValidationEnabled is set to true. Brilliant. Thanks for your help :-)

I didn't realise AntiSpam filtering is enabled. Is there any recommended tweaks for the default setup?

Alan Hardisty

5/18/2011

My recommendation is to disable them all and install Vamsoft ORF (http://www.vamsoft.com/) - but then that's a personal view. I am not a fan of the built-in tools. Very inflexible and good at losing good mail.

resolver1

5/18/2011

ASKER

Thanks alot. you've been a great help!

Alan Hardisty

5/18/2011

You are welcome. Try the built-in tools and if you get very frustrated - give Vamsoft a 30-day Trial - you may just love it as I do. Not bad piece of software for $239 per server (one off cost - $99 to renew it if you choose to - if you don't - it will continue to work).

resolver1

5/18/2011

ASKER

We have being considering a cloud spam filtering service like message labs. I'm in the process of comparing cloud services vs internal. So Vamsoft will come in handy in the investigation.

Thanks.

Alan Hardisty

5/18/2011

Sounds sensible. My input to that is that the Cloud may not be in your control 100% - whereas Vamsoft is. It currently either allows or Rejects mail - there is no quarantine (but coming in the next version).

It does an incredible job for a 4Mb download and has had some spectacular results:

http://blog.sembee.co.uk/post/Truly-Spectacular-Results-from-Vamsoft-ORF.aspx

Considering the cost (per server) and the usual cost of Cloud services (probably per user), it packs a mighty punch.

resolver1

5/20/2011

ASKER

Thanks for your help.