I've had Mail.app on Lion (and previously Snow Leopard) successfully working with my company's Exchange 2007 for the last couple of years, but today it seems like it's decided not to work. Instead, I get an error message in the UI that it was unable to connect, and in Console.app, the only related message I get seems to be:
25/06/2012 12:32:01.490 Mail: [<_LibSasl2SASLClient: 0x7fcb2944de10> mechanism: PLAIN security layer: no] Failed to start the SASL connection SASL(-1): generic failure:
And that's all. The connection does work with Outlook, however. A Google search hasn't turned up anything useful. Any thoughts on where I can go with this? Unfortunately our IT team doesn't support Mail.app (only Outlook) and they're even reluctant to support Lion, so they won't be much help, and I'd really rather use Mail.app than that horrible bloatware.