Missing Email & Folders

[Robert Covell]

Hello All,

Have a few weird situations that I have been unable to find solutions to.



Server:

CentOS release 6.x

cyrus-imapd-2.4.17-6.el5.src.rpm (Simon Matter)



Client:

Outlook 2013



Our client is using Cyrus to store related emails for their clients. The
server does not actually receive mail, it is placed (copied) there.
Approximately eight clients connect to "one" Cyrus account. When an email
comes in for client X the user will find the appropriate imap folder and
copy it to it. If the folder does exist it is created.



Issue One:

Randomly the server side imap folder is empty. Client imap folder has what
was supposed to be on the server but it is not. The copy of the email
appears to have been successful.



Issue Two:

Randomly computers will not see newly created imap folders from other users.
Regardless of how we attempt to get the folder in the imap list we have to
recreate the account.



My assumption is that this is most likely due to imap support in Outlook and
not Cyrus. Wanting to know if anyone has seen anything like this and if a
solution was found.



Thanks in advance.



-Bob



PS Have been on this mailing list for almost 20 years (since v1.6 I
believe). Can say it is one of the best mailing lists I have been on. Never
ceases to amaze me the quality of feedback and support provided.

[Dan White]

Post by Robert Covell
Hello All,
Have a few weird situations that I have been unable to find solutions to.
CentOS release 6.x
cyrus-imapd-2.4.17-6.el5.src.rpm (Simon Matter)
Outlook 2013
Our client is using Cyrus to store related emails for their clients. The
server does not actually receive mail, it is placed (copied) there.
Approximately eight clients connect to "one" Cyrus account. When an email
comes in for client X the user will find the appropriate imap folder and
copy it to it. If the folder does exist it is created.
Randomly the server side imap folder is empty. Client imap folder has what
was supposed to be on the server but it is not. The copy of the email
appears to have been successful.

Mouse slip?

If you suspect this is due to a client related problem, you could enable
telemetry logging to find out who/what is causeing the emails to go missing.

https://www.cyrusimap.org/imap/reference/faqs/o-telemetry.html

If the purpose is to (mostly) copy emails into the folder and rarely delete,
you could restrict delete access to a specific account via ACL.

https://www.cyrusimap.org/imap/reference/admin/access-control/rights-reference.html

Post by Robert Covell
Randomly computers will not see newly created imap folders from other users.
Regardless of how we attempt to get the folder in the imap list we have to
recreate the account.
My assumption is that this is most likely due to imap support in Outlook and
not Cyrus. Wanting to know if anyone has seen anything like this and if a
solution was found.

[Robert Covell]

Post by Dan White
If you suspect this is due to a client related problem, you could
enable telemetry logging to find out who/what is causeing the emails to go

missing.

Post by Dan White
https://www.cyrusimap.org/imap/reference/faqs/o-telemetry.html

Good idea will turn this on.

Post by Dan White
If the purpose is to (mostly) copy emails into the folder and rarely
delete, you could restrict delete access to a specific account via ACL.
https://www.cyrusimap.org/imap/reference/admin/access-control/rights-
reference.html

Believe it is setup like this, been awhile since I did it. Will confirm.

Also forgot to say the one account is ~90GB if that makes any difference...

-Bob

(sent twice)

[Michael Menge]

Hi,

Post by Dan White

Post by Dan White
If you suspect this is due to a client related problem, you could
enable telemetry logging to find out who/what is causeing the emails to go

missing.

Post by Dan White
https://www.cyrusimap.org/imap/reference/faqs/o-telemetry.html

Good idea will turn this on.

Post by Dan White
If the purpose is to (mostly) copy emails into the folder and rarely
delete, you could restrict delete access to a specific account via ACL.
https://www.cyrusimap.org/imap/reference/admin/access-control/rights-
reference.html

Believe it is setup like this, been awhile since I did it. Will confirm.
Also forgot to say the one account is ~90GB if that makes any difference...
-Bob
(sent twice)

We have seen the same kind of problems with Outlook with much smaller
mailboxes.
I didn't have the time to debug it. So fare I suspected that some Data
in the Outlook
profile got somehow corrupted.

Regards,

Michael Menge


--------------------------------------------------------------------------------
M.Menge Tel.: [phone]
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Zentrum für Datenverarbeitung mail:
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72074 Tübingen

[Marcus Schopen]

Post by Michael Menge
Hi,

Post by Dan White

Post by Dan White
If you suspect this is due to a client related problem, you could
enable telemetry logging to find out who/what is causeing the emails to go

missing.

Post by Dan White
https://www.cyrusimap.org/imap/reference/faqs/o-telemetry.html

Good idea will turn this on.

Post by Dan White
If the purpose is to (mostly) copy emails into the folder and rarely
delete, you could restrict delete access to a specific account via ACL.

https://www.cyrusimap.org/imap/reference/admin/access-control/rights

Post by Michael Menge

Post by Dan White

Post by Dan White
-
reference.html

Believe it is setup like this, been awhile since I did it. Will confirm.
Also forgot to say the one account is ~90GB if that makes any difference...
-Bob
(sent twice)

We have seen the same kind of problems with Outlook with much
smaller
mailboxes.
I didn't have the time to debug it. So fare I suspected that some Data
in the Outlook
profile got somehow corrupted.

Isn't this the known bug that Outlook 2013 doesn't really work well if
it is only used via IMAP and not with Exchange? There have been similar
cases with IMAP accounts that have been completely compromised. On the
IMAP there were whole folders missing, but they still existed locally.