Turns out this was a self inflicted wound..
Seems that NOD32 (version 4) and Thunderbird with multiple IMAP accounts has a problem with 'duplication of emails'..
So low and behold disabling NOD32 inside TB solved the problems..
Nothing to do with dovecot..
Seems on Monday everyone had time to upgrade/update things at home..
Thanks for the help.
On 10/20/09 8:03 AM, B. Cook wrote:
Ever since Columbus day things have been strange with my two dovecot servers, according to my Blackberry users.
We do not have a BES just the standard BIS that comes with a personal account.
Several people have told me that since that Monday that they get occasional duplicate copies of messages which only appear singularly in their Maildir inboxes.
I myself even called VZW and got transferred to RIM themselves where they 'reset' my account; (same as me going into the BIS server and deleting and adding again) only to have the same thing happen; again occasionally..