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ocis View Drop Down
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    Posted: 16 December 2009 at 3:12pm
We are getting emails from a specific domain that are marked as spam due to SFDC filter match. It is legitimate email and we need help troubleshooting this issue. The only error message we get is :
 
X-Rejection-Reason: 26 - SFDC filter match
 
Is there any information that we can look for (in the rejection message) that can help us resolve this issue?
 
Thanks.
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yapadu View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote yapadu Quote  Post ReplyReply Direct Link To This Post Posted: 16 December 2009 at 8:16pm
Roberto might have some input for you, but why not just whitelist the domain and no more emails from that domain will be incorrectly stopped.
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ocis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ocis Quote  Post ReplyReply Direct Link To This Post Posted: 17 December 2009 at 8:29am
We were hoping there was another alternative. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LogSat Quote  Post ReplyReply Direct Link To This Post Posted: 17 December 2009 at 11:43pm
Originally posted by ocis ocis wrote:

We are getting emails from a specific domain that are marked as spam due to SFDC filter match. It is legitimate email and we need help troubleshooting this issue. The only error message we get is :
 
X-Rejection-Reason: 26 - SFDC filter match
 
Is there any information that we can look for (in the rejection message) that can help us resolve this issue?
 
Thanks.
Unfortunately there is not another alternative, other than increasing the threshold for this filter in the "SFDC" tab. 
The SFDC filter works based on a "digest" (a hash) created form the email's content. Messages with very similar textual content will share the same hash. Our SFDC database collects all these hashes in realtime for every single email processed by all the SpamFilter installations in the world. When we detect a spike in any hash for which the emails are being blocked by other types of filters, our SFDC server will determine that the specific hash, at that specific time, is characteristic of a specific wave of spam that is being circulated at the moment. This will cause all emails that have that one hash to be marked as spam. As all this occurs in real-time, usually there will be a time frame of 6hr-24hr during which this spike will occur and emails with similar content will thus be blocked. There is no way to determine the specific content that is causing this to happen, as the "digest" is created statistically based on the entire contents of the email, not specific keywords or phrases.
Roberto Franceschetti

LogSat Software

Spam Filter ISP
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ocis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ocis Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2009 at 10:45am
Thanks for the response.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Neolisk Quote  Post ReplyReply Direct Link To This Post Posted: 13 January 2010 at 4:08pm
We had the same issue with bellnet.ca domain - a legitimate email bounced back twice, with SFDC relevance being 11 and 25 respectively for different IPs. I think SFI needs customizable filtering for such cases.
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