Added this to config.inc.php:
// Log IMAP conversation to <log_dir>/imap or to syslog
$config['imap_debug'] = true;
No additional log files or entries in \logs. What result is expected?
In case it's relevent, here are the imap setting I have. Unchanged from 1.0.2, *except* removed 'default_folders' which seems to have been dropped in 1.1.2. Adding this back did not solve the problem.
// This domain will be used to form e-mail addresses of new users
// Specify an array with 'host' => 'domain' values to support multiple hosts
// Supported replacement variables:
// %h - user's IMAP hostname
// %n - http hostname ($_SERVER['SERVER_NAME'])
// %d - domain (http hostname without the first part)
// %z - IMAP domain (IMAP hostname without the first part)
// For example %n = mail.domain.tld, %t = domain.tld
$config['mail_domain'] = 'xxx.com';
// store draft message is this mailbox
// leave blank if draft messages should not be stored
// NOTE: Use folder names with namespace prefix (INBOX. on Courier-IMAP)
$config['drafts_mbox'] = 'INBOX.Drafts';
// store spam messages in this mailbox
// NOTE: Use folder names with namespace prefix (INBOX. on Courier-IMAP)
$config['junk_mbox'] = 'INBOX.Junk';
// store sent message is this mailbox
// leave blank if sent messages should not be stored
// NOTE: Use folder names with namespace prefix (INBOX. on Courier-IMAP)
$config['sent_mbox'] = 'INBOX.Sent';
// move messages to this folder when deleting them
// leave blank if they should be deleted directly
// NOTE: Use folder names with namespace prefix (INBOX. on Courier-IMAP)
$config['trash_mbox'] = 'INBOX.Trash';
// display these folders separately in the mailbox list.
// these folders will also be displayed with localized names
// NOTE: Use folder names with namespace prefix (INBOX. on Courier-IMAP)
// REMOVED for 1.1.2
//$config['default_folders'] = array('INBOX', 'INBOX.Drafts', 'INBOX.Sent', 'INBOX.Junk', 'INBOX.Trash');