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How can I block generic spam from Yahoo Mail servers??

I've got a problem with Yahoo Mail servers - they're dropping spam at our Sophos edge appliance. Some of the Spam is getting through, most not, but its getting to the point of annoyance now and I thought I should look into how I can do this

Is there any way I can put in a rule to block this? The Spam is DKIM'd and SPF'd as well to add to the fun

Below is the yahoo junk 1 user is getting.

ES1100

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0 TomA over 11 years ago

Hi Graeme,
You're right, based on the client addresses it looks like this is coming from legitimate Yahoo mail servers. So you won't want to be blocking this by sender address or client IP or anything like that, which limits the options to block this manually.
Unless there is common data/keywords in these e-mails you could block?
My advice would be to submit samples and then follow up Sophos support:
http://www.sophos.com/en-us/support/knowledgebase/23113.aspx
All the best.
Tom.
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0 TomA over 11 years ago

Hi Graeme,
You're right, based on the client addresses it looks like this is coming from legitimate Yahoo mail servers. So you won't want to be blocking this by sender address or client IP or anything like that, which limits the options to block this manually.
Unless there is common data/keywords in these e-mails you could block?
My advice would be to submit samples and then follow up Sophos support:
http://www.sophos.com/en-us/support/knowledgebase/23113.aspx
All the best.
Tom.
:38011
Cancel
Vote Up 0 Vote Down

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