[Dovecot] trouble accessing mbox folders with simultaneous logins

Michael Cosby michael at crosscode.org
Mon Oct 4 18:12:00 EEST 2004

I can help you narrow the problem down a bit. I'm assuming you're using 1.0-test45 or 46, in which case I see the same problem using mbox, index files stored on disk and no NFS. I access my mail via pine and chatter email (an imap client for the palm). While I've not seen any errors that specifically say UID, the client for the palm will occasionally reload messages from a few days back thinking they're new, which eventually crashes the client when the count of mail it should be loading doesn't match what it actually got (the palm client's in beta, too :) ).

I solved the problem by moving back to the 0.99 series, which other than performance issues works just fine for me.

- Michael

In response to:

Hi all!


I have setup dovecot (RPM) on a Fedora Core 2 machine using LDAP for authentication. It all seems to work pretty well, except for simultaneous logins. I am using mbox files to store the mail as follows (from /etc/dovecot.conf):


default_mail_env = mbox:~/.mail/:INBOX=/var/mail/%u:INDEX=MEMORY


So the INBOX file is stored in /var/mail, other mailfolders are stored in the users home directory in the .mail folder. Because the /home directory of this machine is mounted from fileserver through NFS, I have set the INDEX=MEMORY options (see http://www.dovecot.org/doc/nfs.txt).


As said before I am getting some problems when using simultaneous logins for the same mail account (for instance when multiple users that work on a specific project want to share a mail account containing all the mail about the project in addition to their private account). The client used is Microsoft Outlook and besides some outlook specific problems, it also gives these errors (translated from Dutch) when many users are simultaneously logged in to the same account:


'Your server reported that a UID does not comply with the IMAP standard, which signifies an error on the server.'

'The UID of a message is unexpectedly deleted. This signifies an error on the server.'


I am not sure where to look... I assume a problem with the index files? Does NFS cause the problem? Will this be fixed if I switch to maildirs?

I would be grateful for any tips on the subject!




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