[Dovecot] Possible Caching Bug showing up as a MIME Boundary Issue

Kevin A. McGrail kmcgrail at pccc.com
Thu May 31 18:48:13 EEST 2007

Possible Caching Bug showing up as a MIME Boundary Issue


I'm using Dovecot version 1.0.0. I was using Dovecot version 1.0.0 beta3 or alpha4.  I upgraded to Dovecot 1.0.0 to make sure that was not the issue. 


Over the past few weeks on a server running a stable dovecot, I have seem a few emails arriving where the MIME document structure dividers are visible. I've included a screenshot showing this. 

Using OE6 as client.  Have tried adding oe6-fetch-no-newmail per clients wiki but this seems to stop the ability to login at all.

I am using two different machines with Outlook Express to access the same email. The same problem will show up on both.

Usually, if I delete the .imap cache for the folder, the email comes down correctly.


My dovecot -n output is:


# /etc/dovecot.conf

listen: *:144

ssl_listen: *:994

ssl_cert_file: /usr/local/ssl/certs/stunnel.pem

ssl_key_file: /usr/local/ssl/certs/stunnel.pem

disable_plaintext_auth: no

login_dir: /var/run/dovecot/login

login_executable: /usr/local/libexec/dovecot/imap-login

max_mail_processes: 50

verbose_proctitle: yes

default_mail_env: mbox:~/:INBOX=/var/spool/mail/%u

mail_location: mbox:~/:INBOX=/var/spool/mail/%u

imap_client_workarounds: outlook-idle delay-newmail

auth default:


    driver: pam


    driver: passwd


    driver: prefetch



The server is on a heavily modified RedHat 7.2 on x86 box with ext3


Thanks in Advance,

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