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ddaas
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Joined: 28 Feb 2005
Posts: 106
Location: Germany

PostPosted: Thu Nov 10, 2005 3:00 pm    Post subject: BlackBerry and IMAPS Reply with quote

Hi,
I have 2 BlackBerry Devices which check the IMAPS Server for new emails.
One accout works perfectly. The other BlackBerry device checks for new emails every 15 minutes, but it finds no new mails (and there are).
The BlackBerry devices have their one public IP.

From the dovecot logs, I see that the login was successfull but it seams that the imaps server reported no new email to the client which checked for new emails.

Does anybody know what could it be?

What means from the point of view of the server & client a read/unread mail?

Thanks,
ddaas
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egberts
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PostPosted: Wed Nov 16, 2005 6:29 am    Post subject: Reply with quote

You will have to contact your Blackberry Server administrator and/or Blackberry support.
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ddaas
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PostPosted: Wed Nov 16, 2005 7:44 am    Post subject: Reply with quote

ok, but what means read/unread e-mail ? How are they recognized? Is this from the server point of view or from the client, or both?
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egberts
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PostPosted: Wed Nov 16, 2005 8:48 am    Post subject: Reply with quote

The blackberry server (typically resides on the same server as the MS Exchange) is the primary IMAP client.

The progression of signals/packets are:

Quote:
Blackberry Unit
<GPRS>
RIM Mobile Base
Blackberry Server

at this point, it can be configured to go out to several places

Microsoft Exchange
ISP IMAP
ISP POP3
Directly to the Internet (web browsing)

So, it is the blackberry server that needs to be examined for IMAP problem. Some issues maybe date/time synchronization issue (NTP?).
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Clusters of Fry's Special, AMD 2200, 2 GB DDR, 220 GB (2008.1/desktop, stage 1, -O3) x8
HP Compaq Fry's SPecial, AMD 2100, 2 GB DDR, 260 GB (2008.0/server, stage 1, -O3)
Ultra Sparc 5, 256MB, 3GB (2006.1/server, stage 1, -O3)
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ddaas
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Joined: 28 Feb 2005
Posts: 106
Location: Germany

PostPosted: Wed Nov 16, 2005 10:58 am    Post subject: Reply with quote

thanks for the information. I'll check it with the BlackBerry admin.
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magic919
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Joined: 17 Jun 2005
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PostPosted: Wed Nov 16, 2005 12:08 pm    Post subject: Reply with quote

IMAP uses the subfolders of the .maildir. New ones go in new/ and get moved to /cur when read.
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ddaas
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PostPosted: Wed Nov 16, 2005 12:48 pm    Post subject: Reply with quote

hi,
I've checked it and my IMAP server uses the following file structure:

- All the mails are in /home/user/mail in format of mbox (one file for all emails or one file for one folder)
- there is also a /home/user/maill/.imap folder
- For every folder in /home/user/mail there is also a folder with the same name in /home/user/.imap/
ex: there is /home/user/mail/Sent and /home/user/mail/.imap/Sent which contains: .customflags .imap.index .imap.index.data .imap.index.log .imap.index.tree
These files seam to be binary files.

I've tested with some new/old emails and it seams no email is moved based on its status (unread/read). Maybe this info is held in the files from /home/user/mail/.imap/folder_name

Anyway, it is not so clear. Maybe I must read the imap protocol - RFC 3501

What is your opinion?
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magic919
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PostPosted: Wed Nov 16, 2005 1:16 pm    Post subject: Reply with quote

Okay. I see. My IMAP server moves stuff around but also uses index files. Your one must be using those to tell the new email from the rest, without actually moving any. Quick check of the modified dates on the files should prove this.
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