[Dovecot] File isn't in mbox format - Couldn't open INBOX

I cannot reproduce this error everytime, but it seems to happen when Outlook tries to delete the first message (the first message in the file, message on top) in the /var/mail/user file.

I tried looking through the mailing list but came up blank. Is this a known problem?

I can fix this problem by editing the file manually and fixing the file. If I delete the first 2 lines (in the example below) and make sure the Inbox file starts at "From ..." it works fine again.

Here is the log:

Feb 2 09:23:45 angel pop3-login: Login: sathyan [127.0.0.1] Feb 2 09:23:45 angel pop3(sathyan): File isn't in mbox format: /var/mail/sathyan Feb 2 09:23:45 angel pop3(sathyan): File isn't in mbox format: /var/mail/sathyan Feb 2 09:23:45 angel pop3(sathyan): Couldn't open INBOX: Internal error occured. Refer to server log for more information. [2005-02-02 09:23:45]

The inbox file for this user looks like this:

[root@angel mail]# head sathyan zenxoI6Jdi_xPyRoBhrhf--

From caecelius@payaway.every1.net Wed Feb 2 07:03:36 2005 Return-Path: <caecelius@payaway.every1.net>

--

Girish Patangay <girish@intoto.com> Intoto Inc <www.intoto.com> Phone: 408.844.0480x304 Fax: 408.844.0488 PG ID: 0x74D3A118