Retraction on Conversion Story of ISIS Fighter

One of our readers reported that the story we published in our March edition is now suspected to be untrue. He writes:
"I was super encouraged by this testimony about the Isis fighter who converted and was about to forward it to some friends, until I realized that the story was published by World News Daily Report, a satirical online newspaper. Basically everything in the article is made-up. There is no "Aleppo Herald" for instance. I've fallen for these kinds of things before--basically, the WNDR prints nothing but fake news but in a style that sounds completely legitimate.
https://ablestmage.wordpress.com/2015/02/28/did-the-aleppo-herald-report-hermann-groschlins-story-of-a-converted-isis-fighter-heres-proof/
Thanks!
Jonathan