Thanks @William_A for your reply. It appears the font changed to Wingding, making it look squiggly. From some of the recipients it appears they are opening the newsletter on their iPhone or iPad, which gives it the squiggly font. Most think we've been hacked or something. I've sent this as a case review to CC and they were able to see what I meant.
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Recently sent our newsletter out and the font changed. Recipients of the newsletter were not able to read it because of the change. What could have caused this?
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