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I am using GFI MailEssentials on Exchange 2003 but I can't seem to configure the GFI or the Exchange so that e-mails to non-existent users gets deleted

Posted on 2006-11-15
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Last Modified: 2010-03-06
I am using GFI MailEssentials 12 on Exchange 2003 but I can't seem to configure the GFI or the Exchange so that e-mails to non-existent users gets deleted automatically.  (in GFI, I have most of my filter settings set to "delete" except Bayesian Analysis and "DNS Blacklists", which were set to forward to a  bogus mail box for review for before final deletion.)   I can't seem to stop receiving mails from non-existing users!

thanks,
Mike
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Question by:wang0162
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LeeDerbyshire earned 400 total points
ID: 17948159
You can configure this in Exchange System Manager. Go to Global Settings/Message Delivery/Recipient Filtering, and the enable 'Filter Recipients that are not in the Directory'.  The look at the properties of you Default SMTP Virtual Server, click the Advanced button, then Edit, then enable 'Apply Recipient Filter'.  If you do this, it is also recommended to configure a tarpit time:

http://www.microsoft.com/technet/prodtechnol/exchange/Analyzer/f8a08dde-6523-46ab-9e77-7ae3864c22cc.mspx?mfr=true
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by:wang0162
ID: 17948210
I am almost there! Please excuse my inexperience in this.   How do I get to the ". . .look at the properties of you Default SMTP Virtual Server" part?
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by:wang0162
ID: 17948263
found it.  Let me try and see.
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by:wang0162
ID: 17948565
What do you recommend for tarptime?  what do you set yours to be (if applicable)
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by:LeeDerbyshire
ID: 17948641
I use 5 seconds.  It's just something to stop a spamming server trying lots of random addresses (e.g. aaa@domain.com, aab@domain.com, aac@domain.com, etc.) each second, in order to discover the valid addresses.  Now they are only be able to try one address every five seconds, instead.
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