PDF scanning?
Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=7154
Printed Date: 31 October 2025 at 4:50pm
Topic: PDF scanning?
Posted By: yapadu
Subject: PDF scanning?
Date Posted: 20 February 2018 at 11:00pm
I am attempting to stop some PDF documents. We are seeing more PDF attachments that contain links to things like bit.ly.
Seems that keyword filters do not pickup the text in PDF documents.
I am going to try and attach a PDF document (can't find a way to send an attachment here) that is like what I am trying to stop. It is not graphic in nature so I thought the system would be able to scan the text quite easily.
Going through the old release notes, I do find that keyword scanning of PDF was removed in build 3.5.4.702 but that was more than 10 years ago now.
What is the current status?
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I am a user of SF, not an employee. Use any advice offered at your own risk.
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Replies:
Posted By: LogSat
Date Posted: 21 February 2018 at 10:10pm
Sorry yapadu - after being removed in 3.5.4.702, the PDF scanning capability has not been introduced again. I do not have an answer as to whether this feature will be re-added or not.
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Roberto Franceschetti
http://www.logsat.com" rel="nofollow - LogSat Software
http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP
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Posted By: HerbertRi
Date Posted: 29 May 2018 at 8:39am
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Out of curiosity, what was the issue with this feature, Roberto?
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Posted By: LogSat
Date Posted: 29 May 2018 at 9:46pm
We had some reliability issues with the PDF library we were using - it was causing too many access violations that would cascade and in turn cause SpamFilter to sometimes crash. Unlike other libraries we license where the source code is available to us (allowing us to debug and fix the issue), in that case there was no source code and thus no way for us to resolve the crashes. As spam via PDFs at that time had also greatly reduced in quantity, we opted to simply drop the functionality...
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Roberto Franceschetti
http://www.logsat.com" rel="nofollow - LogSat Software
http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP
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