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I'm using google apps for email, and my primary accound is also the catch-all email address.

Now, there are a number of email addresses that seem to attract a lot of spam - is there any way to exclude them, so that the sender gets an error?

The google spam filter picks up almost all of these, but I'm wondering if this is possible.

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3 Answers

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Catchalls in mail domains today are somewhat brave. In addition to all the mail coming in to fake addresses, you then have the spam harvesters who can't tell a message-id from an email address, etc, and all those mails can come in too.

Honestly, it's better to use:

  1. Aliases, set up in the accounts page, you can create lots of aliases
  2. Variant address forms. Gmail supports user+subaddress@example.org addresses, and also canonicalises away dots, so that foobar@example.org == foo.bar@example.org == fo.ob.ar@example.org
  3. Addresses with a reasonable length left-hand-side. Much as it pains me, as a three-letter initial sort of person, there's a reason Google don't allow such short addresses in @gmail.com; they really do receive a lot more spam from just random dictionary probes.

If you try excluding some addresses by filtering them aside then you just end up with more and more complex filters, which are a pain to keep up-to-date and if you're not careful might catch too much.

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You would have to get your users to create a filter (in settings -> filters) to delete messages as they come in from certain addresses, i would also recommend that you mark them as read so it doesnt show you as having un-read messages in your trash box

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It is not possible to block them like you want to, however it is possible to use the filter feature and send some e-mails directly into the trash where they'll get deleted from automatically after a few days.

Another option may be moving the catchall e-mail address to some other mailbox or removing it altogether.

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Filters don't work on messages marked as spam. –  chris Dec 10 '09 at 12:53
    
Well, if they're in the spam box then you shouldn't worry about them, as they'll be deleted as time goes by. –  gekkz Dec 10 '09 at 13:56
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