Hmm, I haven't had any issues with BIS or BES users. But I checked my
config and I have: mailbox_idle_check_interval = 120

I did that for other purposes, guess that just fixed it for me, before
bis ever started using the idle command.

Quoting "B. Cook" <bcook@poughkeepsieschools.org>:

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..

Below is relevant dovecot info..

-r-xr-xr-x 1 root wheel 164064 Oct 1 17:16 /usr/local/sbin/dovecot

(date it was built; prior to any problems.. *whew*) ;)

 1	# 1.2.4: /usr/local/etc/dovecot.conf
 2	# OS: FreeBSD 7.2-RELEASE-p3 i386
 3	ssl_cert_file:  

/usr/local/etc/lighttpd/ssl/mail.poughkeepsieschools.org.pem 4 ssl_key_file:
/usr/local/etc/lighttpd/ssl/mail.poughkeepsieschools.org.pem 5 disable_plaintext_auth: no 6 verbose_ssl: yes 7 login_dir: /var/run/dovecot/login 8 login_executable: /usr/local/libexec/dovecot/imap-login 9 login_greeting: mail.poughkeepsieschools.org OK 10 first_valid_uid: 89 11 last_valid_uid: 89 12 first_valid_gid: 89 13 last_valid_gid: 89 14 maildir_copy_preserve_filename: yes 15 mail_plugins: quota imap_quota 16 imap_client_workarounds: delay-newmail outlook-idle
tb-extra-mailbox-sep 17 auth default: 18 mechanisms: plain login 19 user: vpopmail 20 passdb: 21 driver: vpopmail 22 userdb: 23 driver: vpopmail 24 socket: 25 type: listen 26 client: 27 path: /var/run/dovecot/auth-client 28 mode: 438 29 plugin: 30 quota: maildir:User quota 31 expire: Trash 7 Spam 30

Now what does not show here is something that I put in that it
looked like it was supposed to help but didn't..

mailbox_idle_check_interval = 30

after looking around at other people complaining about BIS and
possible dovecot issues it seemed that that entry was the 'magic'
the BIS was missing; except I never had it and never had troubles.

I'm assuming this is a BIS issue of some sort, but I can't tell.

After looking on the wiki I didn't see anything that says "BIS users
look here for tips.. "

So I'm assuming there aren't any; I think it should just work with
the IMAP server..

Any help would be appreciated as everyone thinks this is 'our
problem' and "if we had an exchange server we wouldn't be having
these problems.."

Thanks in advance..

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..