On Mon, 14 Nov 2011, Jan Schneider wrote:
Zitat von [email protected]:
Quoting Jan Schneider <[email protected]>:
Zitat von Agustín Quintana Alfonso <[email protected]>:
English is not my native language; please excuse typing errors.
We have this configuration:
* Production environment
Webmail server
--------------
OS: Fedora Core release 3
Webserver: Apache 2.0.53
PHP: 4.3.11
Horde (horde): 3.1.3
Mail (imp): 4.1.3
IMAP server
-----------
IMAP server: UW-IMAP 2007e.404
Default mail folder format: mbx
The server supports the following IMAP capabilities:
IMAP4REV1 I18NLEVEL=1 LITERAL+ IDLE UIDPLUS NAMESPACE CHILDREN
MAILBOX-REFERRALS BINARY UNSELECT ESEARCH WITHIN SCAN SORT
THREAD=REFERENCES THREAD=ORDEREDSUBJECT MULTIAPPEND SASL-IR
LOGIN-REFERRALS AUTH=PLAIN AUTH=LOGIN
* Test environment
Webmail server
--------------
OS: Ubuntu 10.04.3 LTS
Webserver: Apache 2.2.14
PHP: 5.3.2
Horde (horde): 4.0.10
Mail (imp): 5.0.14
Imapproxy: 1.2.6
In order to improve performance, we convert some mailboxes to
uw-imap "mix" format.
The problem in test environment (traditional and dynamic mode): if
we DISABLE "When deleting messages, move them to your Trash folder
instead of marking them as deleted?" and we mark some messages for
deletion, when we purge the mailbox ALL messages are deleted. This
doesn't happen with mbx format.
No problem with other email clients: Thunderbird, Outlook,...
No problem with the production environment.
Log example with mbx format in test environment (read mailbox,
mark message for deletion, purge mailbox):
================================================================================
C: 2 SELECT entraba_mbx
S: * 3 EXISTS
S: * 0 RECENT
S: * OK [UIDVALIDITY 1320933381] UID validity status
S: * OK [UIDNEXT 99] Predicted next UID
S: * FLAGS (\Answered \Flagged \Deleted \Draft \Seen)
S: * OK [PERMANENTFLAGS (\* \Answered \Flagged \Deleted \Draft
\Seen)] Permanent flags
S: 2 OK [READ-WRITE] SELECT completed
C: 3 UID EXPUNGE 1:*
S: * 2 EXPUNGE
S: * 2 EXISTS
S: * 0 RECENT
================================================================================
Log example with mix format in test environment (read mailbox,
mark message for deletion, purge mailbox):
================================================================================
C: 2 SELECT entrada_mix
S: * 3 EXISTS
S: * 0 RECENT
S: * OK [UIDVALIDITY 1320933381] UID validity status
S: * OK [UIDNEXT 102] Predicted next UID
S: * FLAGS (\Answered \Flagged \Deleted \Draft \Seen)
S: * OK [PERMANENTFLAGS (\* \Answered \Flagged \Deleted \Draft
\Seen)] Permanent flags
S: 2 OK [READ-WRITE] SELECT completed
C: 3 UID EXPUNGE 1:*
S: * 1 EXPUNGE
S: * 1 EXPUNGE
S: * 1 EXPUNGE
S: * 0 EXISTS
S: * 0 RECENT
S: 3 OK Expunged 3 messages
IMP is sending exactly the same commands, so it's the server doing that.
Jan.
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Sorry, if the problem is the UW-IMP server I don't understand why it
doesn't happen with older IMP (4.1.3) and other email clients like
Thunderbird. Only occur with the latest version of IMP. We ran tests
with the same mailboxes, the only difference is the email client.
Different clients may use different IMAP commands.
From RFC 4315 (http://tools.ietf.org/html/rfc4315):
2.1. UID EXPUNGE Command
Arguments: sequence set
Data: untagged responses: EXPUNGE
Result: OK - expunge completed
NO - expunge failure (e.g., permission denied)
BAD - command unknown or arguments invalid
The UID EXPUNGE command permanently removes all messages that both
have the \Deleted flag set and have a UID that is included in the
specified sequence set from the currently selected mailbox. If a
message either does not have the \Deleted flag set or has a UID
that is not included in the specified sequence set, it is not
affected.
The commands in the IMAP telemetry log provided by Agustín indicate that 3
messages were expungedby the server, which should only happen if the
server thinks that those messages have the \Deleted flag set.
Older IMP versions and other IMAP clients such as Thunderbird probably do
not support the UIDPLUS extension and only issue the "EXPUNGE" command
rather than the new "UID EXPUNGE" command. This could be tickling a bug
in UW-IMAPD, although I can't find a mention of a bug like this in a
Google search.
Andy--
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