[Dovecot] great disappearing email mystery

[Frank Bonnet]

Jack Stewart wrote:
> 
> 
> dhottinger at harrisonburg.k12.va.us wrote:
>> Quoting Jack Stewart <jstewart at caltech.edu>:
>>
>>>
>>>
>>> dhottinger at harrisonburg.k12.va.us wrote:
>>>>
>>>>> On Wed, 2009-02-11 at 17:27 -0500, dhottinger at harrisonburg.k12.va.us
>>>>> wrote:
>>>>>> Have there been any issues with dovecot and using outlook express
>>>>>> (imap) as an email client?  I have had a couple of users come up with
>>>>>> random missing emails.  Im trying to figure out if it is user error,
>>>>>> or something wacky in my mailserver.   I cant find anything 
>>>>>> telling in
>>>>>> maillog files or my messages.  Dovecot version is 1.0.3.  Its ok to
>>>>>> reply to me, I get list messages digest.
>>>>>
>>>
>>> Is it missing in the mail server or just on the client? What does your
>>> server layout look like?
>>>
>>> We had a similar issue with Outlook and AppleMail where the uidlist
>>> would change just enough to wipe out their local index. People would
>>> tell us that they could see the E-mail in webmail but not in their
>>> client.
>>>
>>> We haven't had the issue in a long while, but it was painful while it
>>> lasted. The key to resolving the issue had to do with upgrades to the
>>> dovecot version - we currently just made the jump to 1.1.11 and it
>>> seems to be working well.  Shes been up almost a year now without a 
>>> reboot, with close to 750 accounts.
>>>
>>> ---Jack
>>
>> Jack,
>> My server is a linux box running sendmail, procmail, and dovecot, I 
>> use ldap on the backend.  Most of my clients use Horde for webmail, 
>> but I have some that use outlook.  The emails are missing, missing.  
>> Neither on client or server.  Thing is I looked on my backups (7 days 
>> worth) and supposedly missing emails werent there either.  So its hard 
>> to tell how long they have been missing.  Also, this server was put 
>> online 2 years ago, so all mailboxes were migrated from the oldserver 
>> to the new one and renamed oldmail.  Nothing in their either.  Were 
>> there any gotcha's on the upgrade?  Im not one to upgrade unless there 
>> are security issues or problems and my mailserver has been extremely 
>> stable
>>
> 
> That is a mystery - nothing to do with my environment.
> 
> If I understand you correctly, nothing has changed in two years and some 
> users are now having missing messages. Assuming that this is the case, 
> my money is on the E-mail clients.

Anyone knows how many imap processes starts outlook ?

the default with Thunderbird is 5 which is a nonsense one is enough