[Dovecot] Duplicates when switching from Qpopper to Dovecot pop3

[Tristan Goguen]

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

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Tristan

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

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# 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
}