All,
Although I see related topics on the forum, but I don\'t see a clear solution on this issue. I am trying to set a javax.servlet.http.Cookie with an expiration t
The answer is at Persistent cookies from a servlet in IE.
Your case may be a different flavour of the same issue: that is, by prefixing the domain with a "." (which I'm pretty sure is a version 1 cookie feature), something in the Java stack decides it's a version 1 cookie (unrecognized and not persisted by IE, even IE8) and sends that cookie format.
Or, as that answer suggests, is there something in your cookie value that contains an unrecognized character?