Hi folks, I just upgraded to Cyrus 2.0.15 (from 2.0.6), and everything appears to be fine with one exception - Outlook Express now has a problem writing sent mail to the Sent folder on my account. My OE config hasn't changed from when I was using it with 2.0.6 (even the name of the server is the same). Now I send mail and it goes through ok, but OE give me the following error: Some of the messages in your Outbox Folder could not be copied to your Sent Items Folder. Subject 'lkj', Account: 'mail', Server: 'mail', Protocol: IMAP, Server Response: '', Port: 143, Secure(SSL): No, Error Number: 0x8004108D /var/log/maillog only tells me that sendmail dispatched the message as per normal, and /var/log/imapd.log (the results of local6.debug) gives me the following output, which looks ok to my untrained eye: Aug 2 15:16:27 nch master[5747]: about to exec /usr/local/cyrus/bin/lmtpd Aug 2 15:16:27 nch service-lmtpunix[5747]: executed Aug 2 15:16:27 nch lmtpd[5747]: accepted connection Aug 2 15:16:27 nch lmtpd[5747]: lmtp connection preauth'd as postman FYI, my OE setup under the Account properties IMAP tab has "Store Special Folders on IMAP server" ticked, with Sent mail going to "Sent" and Drafts to "Drafts". Saving drafts fails too. Does anybody have any idea what could be causing this issue? As I said, the same client configuration worked fabulously with Cyrus 2.0.6 TIA, Cheerio, d.