I set my list to allow plain text only (no hyper text, no attachment, etc). Occasionally, there are mails through the list having symbols like "=20", " =", etc in the mail body (within the text). I used to use a perl recipe from this list (or procmail list; sometimes ago) to clean them: perl -pe 's/=([0-9a-f][0-9a-f])/sprintf "%c", hex($1)/ige; s/=\n/\n/' but it's not always effective. They used to appear often from European mails, but now some US orignated mail also have it. I wonder what exactly are they and is there a better way clean them out? Zhiliang