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<p dir="auto">I suspect IT changed the Exchange configuration over break, and all of a sudden login is failing. When I google the error I find people saying that it’s rejecting PLAIN authentication. Except of course the !@#!@ server says it <em>accepts</em> PLAIN. </p>
<p dir="auto">05:44:57 S: A1 OK Begin TLS negotiation now.<br/>
05:44:57 Initiating secure connection…<br/>
05:45:00 Setup of secure connection complete (TLSv1).<br/>
05:45:00 Cipher: AES128-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(128) Mac=SHA1<br/>
05:45:00 C: A2 CAPABILITY<br/>
05:45:01 S: * CAPABILITY IMAP4 IMAP4rev1 AUTH=NTLM AUTH=GSSAPI AUTH=PLAIN UIDPLUS CHILDREN IDLE NAMESPACE LITERAL+<br/>
05:45:01 S: A2 OK CAPABILITY completed.<br/>
05:45:01 Retrieving password (keychain or user request)<br/>
05:45:01 C: A3 AUTHENTICATE PLAIN<br/>
05:45:01 S: +<br/>
05:45:01 C: ••••••••••<br/>
05:45:02 S: A3 NO AUTHENTICATE failed.<br/>
05:45:02 Error: Server response: “A3 NO AUTHENTICATE failed.”. Command attempted: “••••••••••”. </p>
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