Hi,

A couple configuration settings I've found that can cause this:
1) Open up a new message.
2) Click Tools/Options then click the Spelling & Grammar tab.
3) Click to select the option "Check spelling as you type" then click OK.
4) Close the new message, then try sending a new test message to yourself
and then
replying to check the spell check functionality.

Also, check to see if the setting "Hide spelling errors in this document"
in the
Tools\Options\Spelling & Grammar tab in the mail message is checked, if it
is,
uncheck it, click OK, and try replying or forwarding again.

Hope this helps.

With Regards,
Asima

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