Using a fairly simple dovecot config (which obviously needs some max limit
tweaking) we have problems with IMAP synchronization between thunderbird
clients.
Two TB clients in the same IMAP mailbox will, from time to time, show different
views of the same INBOX folders, when TB caching is enabled. The only fix is
to right-click on the folder, go to "Properties" and use the "Repair Folder"
option which repairs the local TB .msf cache file.
Is there any server-side fix/workaround that would keep TB from regularly going
out-of-sync ? This happens with TB3 and newer versions, in concert with either
dovecot 1 or 2.
The obvious fix is to disable TB local caching, which unfortunately also
disables certain search features and can be a pain for large mailboxes.
# dovecot -n
# 2.0.13: /etc/dovecot/dovecot.conf
doveconf: Warning: service auth { client_limit=4096 } is lower than required
under max. load (7168)
doveconf: Warning: service anvil { client_limit=2048 } is lower than required
under max. load (3075)
# OS: OpenBSD 5.0 amd64 ffs
auth_default_realm = dovecot.org
auth_mechanisms = plain digest-md5 cram-md5 apop
auth_username_translation = :@
default_client_limit = 2048
default_internal_user = _dovecot
default_login_user = _dovenull
default_process_limit = 1024
disable_plaintext_auth = no
first_valid_gid = 125
first_valid_uid = 125
mail_location = maildir:/mail/%d/%n/
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy
include variables body enotify environment mailbox date
mbox_write_locks = fcntl
mmap_disable = yes
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
plugin {
sieve = ~/.dovecot.sieve
sieve_dir = ~/sieve
sieve_global_path = /etc/dovecot/default.sieve
}
protocols = imap pop3 lmtp sieve
service auth {
unix_listener auth-userdb {
user = mail
}
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
inet_listener sieve_deprecated {
port = 2000
}
}
ssl_cert = </etc/balls/balls-cert.pem
ssl_key = </etc/balls/balls-key.pem
userdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
protocol lda {
mail_plugins = sieve
}
protocol imap {
imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags
mail_max_userip_connections = 50
}
protocol pop3 {
mail_max_userip_connections = 50
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
pop3_save_uidl = yes
pop3_uidl_format = %v-%u
}
