i have newsletter system keeps track of people read it. although function works if permission given download images. not problem @ time.
my problem when open newsletter in outlook (2010) , give permission download images, system doesn't register view. when open same newsletter in gmail, works without problem. when use outlook save e-mail html file , open file, new view registered. page save's view , renders 1x1 image, doesn't return errors , no errors can found in apache logs.
the strange thing still worked until week ago. if put backups of code, still doesn't work....
the image url build base64 encodes string, example: http://domain.com/tracker/eyjtywlsaw5nswqioii4mjqilcjjb250ywn0swqiojm3mza5lcjjahvuayi6imiyymninzhknjaymmvmnzq0nmm4zda0yzu1zgzhmty0in0=/ in encodes string, have json string contains newsletter id, contact id , md5 string use validate data.
i run of ideas fix or debug issue. have tip or better, solution? :) it possible microsoft updated outlook prevent downloading kind of images?
- check if sending correct mime
- i suggest using extensions in url example: .png .jpg
- try different domain.
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