Hello,<br><br>On a production murder, on Debian Sarge and Cyrus IMAP 2.2.8, I met the following error : <br><br>Dec 4 14:45:21 fe01 imaps[23782]: couldn't authenticate to backend server: bad protocol / cancel<br><br>It fell on all frontends at the same time, and occurred probably for most new connected clients.
<br>At the same time, other users could still connect to backends : <br>Dec 4 14:45:01 be02 imap[20306]: login: fe04 [00] <a href="http://catherine.cr">catherine.cr</a> DIGEST-MD5 User logged in<br><br>Any idea of what can cause such an error ?
<br><br>Thanks for your help.<br clear="all"><br>-- <br>Best regards,<br>-----<br>Laurent