Home » Kerio User Forums » Kerio Connect » Flooded with spam suddenly from <>

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People complained about mail being slow this morning so I logged in and found a ton of mail stuck in the Queue. Much of it has the from column as being from <>. Anyone know what that means? We had three pages full of stuck email. I'd like to prevent this from happening again.

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Can you post a set of headers from these? With the header info, a custom rule in either Admin or in Spam Assassin can be written to block those. But I'm wondering if the emails were stuck in the in-bound or out-bound queue?
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