I have a client who uses mdaemon as a mail server and Outlook 2010 as a mail client. One user has started getting errors whenever he downloads his mail. The error code is 0x8004210E which switches to 0x8004210A and identifies "another mail client has locked your mailbox." We have gone through a series of tests that I won't bother to spell out in detail here, but we cannot track it down. We cannot find any undelivered emails in mdaemon. We created an entirely new profile in Outlook with an empty pst file and got the same error. They do forward all their e-mail to gmail accounts from the server. If you are familiar with mdaemon and its connection to Outlook, contact me off-list and I will put you in contact with the client. Don Lesser Pioneer Training, Inc. 139B Damon Road, Ste 8 Northampton, MA 01060 (413) 387-1040 (413) 586-0545 (fax) dlesser at ptraining.com www.ptraining.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.hidden-tech.net/pipermail/hidden-discuss/attachments/20130417/17dd0b73/attachment.html