A more understandable never mind. I realize SA has nothing to do with the filters for IMail. Unfortunately IMail is not that extensive in the area of regular expressions. However, if you were running something that had the ability to use SA, there are pre-defined rules that test for the existence of image-only e-mail messages and scores them accordingly.
Maybe regex is different in further versions of IMail than what I'm currently running (v8.15 HF2). Maybe not. I don't know. I filter most everything at one stage or another through either a Barracuda appliance or a server that has SpamAssassin running. On Wednesday, November 16, 2005 at 2:47:18 PM, [EMAIL PROTECTED] confabulated: > Hi Duane, > I don't see the point. SpamAssasin has really nothing to do with the filters > from IMail . > ============================================ > Am Mittwoch, 16. November 2005 um 15:00 schrieben Sie: >> On Tuesday, November 15, 2005 at 10:17:22 PM, [EMAIL PROTECTED] confabulated: >>> Hi, >>> I'm trying to find a rule to filter Mail containing a image only. >>> The rule to filter an empty body would be: B!~(\w|\S). >>> This would not work if an image is in the body. the image tag "<img >>> src=3Dcid:355c628c0d1c32416ab32a0657415cc7>" is a text. >>> I'm not sure, If the parser excludes Image from text. So far i >>> Remember IMail parses everything in the body, e.g. images, pdf's, doc's or >>> whatever we have. >>> I think, the bulid in regex are not good enough to find a rule "If >>> a mail contains a image AND not other text". >>> Any idea? >>> Thanks >> Don't know if this helps or not. I haven't investigated too much yet. >> I've seen a few but not that many to cause alarm yet. This was just >> posted this morning on the users list for SpamAssassin: >> ----- >> <QUESTION> >> I have setup SA 3.1 under FC4, which is working quite well. However, >> one type of message that still gets through is a series of mails that are >> made up of no text other than a varying subject, then a picture, which is >> black text on white, which looks exactly like an ordinary email. Obviously >> SA can't read the message since it is an image, but is there a way to make a >> rule that blocks a mail where there is an image only, no text? >> </QUESTION> >> <RESPONSE> >> Yes, this is a problem, but a simple rule like you describe is overly >> broad; What happens when my wife sends our children snapshots from with her >> cell phone (which causes exactly this case - though the pictures are in >> color). >> Maybe other service providers add some text, and I know she *could* attach a >> message, but seldom does (she just gives it a title like "Nice statue", >> "Pretty bird" or similar short, almost meaningless "Subject:" lines). >> Also, you obviously haven't seen the multi-color text on colored >> background spams with thin (one pixel) randomly angled lines going through >> the text to confuse the commercial services who do already attempt character >> recognition in images. Maybe some enterprising individual will try to >> write a plug-in for SA to do this (still, it would be computationally >> expensive for sites getting many images). >> Once again, digests, net tests (DSN, RCVD, etc.) and header rules >> are your best defense for now (also, AFAICT, ".png" files appear mostly >> in spam, JPEG and TIFF files are sent by most camera phones, so maybe a rule >> on image type would help some, but spammers would quickly adapt, and nearly >> all image formats have legitimate uses - let's not argue about ".gif"s here). >> </RESPONSE> -- "This message is made of 100% recycled electrons." To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
