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emails containing only one .jpg picture... [message #391] Tue, 04 April 2006 15:33
Messages: 3
Registered: May 2005
Junior Member

we are getting a lot of spam that contains only one picture that says buy my viagra or something like that Smile. do you have any good way to block that kind of mail??
Re: emails containing only one .jpg picture... [message #392 is a reply to message #391] Wed, 05 April 2006 08:55 Go to previous message
Messages: 925
Registered: April 2004
Senior Member
Placing information within images is still a viable method to hide content from non-human users.

Many legitimate websites use this method e.g. to make sure that a service is used by humans only, and not by a computer program.

Unfortunately, it is also used by spammers. It usually helps a little to learn these mails as spam. Also, you can try to find common patterns in these mails so you can add a SpamAssassin rule to find them out.

If you have never done this before, have a look at our FAQ pages, there are links to sites offering rule-writing guides.

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