dovecot - Sep 2011 - Duplicates when switching from Qpopper to Dovecot pop3

Hi All,
Our test users re-download the mail they've left on the server when they
switch from Qpopper to Dovecot. Qpopper includes the X-UIDL header - X-UIDL:
X8V"!E)<"!58?"!"9C"! -  on read messages. Any
suggestions are appreciated. I've included my dovecot configuration.

Thank you,
Tristan

---
Tristan

Tristan Goguen
CEO, ILAP?
T: 416-250-5600 ext. 205
F: 416-250-6755
tgoguen at ilap.com
www.ilap.com

---

# 2.0.14: /etc/dovecot.conf
# OS: SunOS 5.10 sun4v  
auth_cache_size = 1048575 B
auth_username_chars =
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.+-_@
auth_username_format = %Ln
auth_verbose = yes
base_dir = /usr/local/var/run/dovecot/
disable_plaintext_auth = no
first_valid_uid = 100
log_path = /var/log/dovecot.log
login_greeting = 
mail_access_groups = mail
mail_fsync = never
mail_location = mbox:~/mail:INBOX=/var/mail/%1u/%1.1u/%u
mbox_dotlock_change_timeout = 1 mins
mbox_min_index_size = 1 B
mbox_read_locks = dotlock
mbox_write_locks = dotlock
mmap_disable = yes
passdb {
  driver = shadow
}
protocols = pop3
service pop3-login {
  client_limit = 10
  inet_listener pop3 {
    address = 216.223.136.7
    port = 110
  }
  process_limit = 128
  process_min_avail = 5
  service_count = 0
  vsz_limit = 512 M
}
shutdown_clients = no
ssl = no
userdb {
  args = blocking=yes
  driver = passwd
}
protocol pop3 {
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
  pop3_enable_last = yes
  pop3_lock_session = yes
  pop3_reuse_xuidl = yes
  pop3_save_uidl = yes
}

Hi All,
Problems can sometimes be solved by _carefully_ reading the documentation:

    <snip>
    Some clients re-download all mails if you change the hostname in the client
configuration. Be aware of this when testing.
    <snip>

We converted without a hitch this morning. Thank you for great software.
Tristan

Tristan Goguen
CEO, ILAP?
T: 416-250-5600 ext. 205
F: 416-250-6755
tgoguen at ilap.com
www.ilap.com

On Sep 22, 2011, at 1:01 PM, Tristan Goguen wrote:
> 
> Hi All,
> Our test users re-download the mail they've left on the server when
they switch from Qpopper to Dovecot. Qpopper includes the X-UIDL header -
X-UIDL: X8V"!E)<"!58?"!"9C"! -  on read messages.
Any suggestions are appreciated. I've included my dovecot configuration.
> 
> Thank you,
> Tristan
> 
> ---
> Tristan
> 
> Tristan Goguen
> CEO, ILAP?
> T: 416-250-5600 ext. 205
> F: 416-250-6755
> tgoguen at ilap.com
> www.ilap.com
> 
> ---
> 
> # 2.0.14: /etc/dovecot.conf
> # OS: SunOS 5.10 sun4v  
> auth_cache_size = 1048575 B
> auth_username_chars =
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.+-_@
> auth_username_format = %Ln
> auth_verbose = yes
> base_dir = /usr/local/var/run/dovecot/
> disable_plaintext_auth = no
> first_valid_uid = 100
> log_path = /var/log/dovecot.log
> login_greeting = 
> mail_access_groups = mail
> mail_fsync = never
> mail_location = mbox:~/mail:INBOX=/var/mail/%1u/%1.1u/%u
> mbox_dotlock_change_timeout = 1 mins
> mbox_min_index_size = 1 B
> mbox_read_locks = dotlock
> mbox_write_locks = dotlock
> mmap_disable = yes
> passdb {
>  driver = shadow
> }
> protocols = pop3
> service pop3-login {
>  client_limit = 10
>  inet_listener pop3 {
>    address = 216.223.136.7
>    port = 110
>  }
>  process_limit = 128
>  process_min_avail = 5
>  service_count = 0
>  vsz_limit = 512 M
> }
> shutdown_clients = no
> ssl = no
> userdb {
>  args = blocking=yes
>  driver = passwd
> }
> protocol pop3 {
>  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
>  pop3_enable_last = yes
>  pop3_lock_session = yes
>  pop3_reuse_xuidl = yes
>  pop3_save_uidl = yes
> }
> 
>