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The Kerberos/GSSAPI ticket was not accepted by the POP server. Please check that you are logged in to the Kerberos/GSSAPI realm. How do I fix this?

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I have just downloaded and installed Thunderbird on a new Windows 8 omputer. I get the message in the headline when I press the Get Mail button

I have just downloaded and installed Thunderbird on a new Windows 8 omputer. I get the message in the headline when I press the Get Mail button

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Thanks for your help. I can no longer see all the account settings in Thunderbird. There does not seem to be a tools menu. I set them the same as I had in Outlook. The in box is mail.telecombusinesshub.co.nz port 995 with SSL encryption. I do not know if my web service provider supports Kerberos/GSSAPI but their help desk did advise me to use Thunderbird.