"Allow insecure authentication" not working on mac mail after upgrade to Yosimite

I recently upgraded to the new Yosemite OS.  Since then, I have not been able to access my ISP's IMAP server. After spending time troubleshooting with the service provider, it seems that the "allow insecure authentication" feature is not working.  The password appears to be sent as a series of "*" which the server can not recognize and I fail the login. It is of note that I am still able to access this email account through my iPhone 4S with all the same settings and had no issues before the Yosimite upgrade. Is there anyway around this issue?

I had the same problem. Rebooting the computer fixed the issue for me.

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