Hi all
We have exchange 2013. When user gets an email in English and replies it from his iPhone in Hebrew the mail received as question marks.
I did some tests, when you just send an email in Hebrew it has utf-8 encoding. But, when you replay in hebrew to an english email then the encoding is us-ascii. Its probably not changing the original encoding of the first message.
We have tried gmail and other mail providers non of them has this problem, only exchange 2013 with iphone.