Hi People, I recently setup a replication service within dovecot between two machines in different datacenters, which has the following configuration; (yes it is hashed out, because I needed to)
#service replicator {
# unix_listener replicator-doveadm {
# mode = 0666
# }
# process_min_avail = 1
#}
#
#service aggregator {
# fifo_listener replication-notify-fifo {
# mode = 0666
# #user = vmail
# }
# unix_listener replication-notify {
# mode = 0666
# #user = vmail
# }
#}
#
#service doveadm {
# inet_listener {
# port = 12346
# }
#}
#
##doveadm_port = 12346
#doveadm_password = XXXXXXX
#replication_max_conns = 30
#
and a mail_replica = tcp:host{a,b}:12346 configuration on each host so that
they are pointing to eachother; This seems to work fine for most accounts, for
example: I never experienced issues with this. However, several other accounts
(with a large variety of clients) got duplicated emails. Looking with doveadm I
only noticed that the numbers of the messages are closely related to eachother
but one number incremented. So they cannot be deleted with the deduplicator
function.
The replication is provided over TCP only, the connection streams over an
OpenVPN tunnel so that the contents are protected, the machines are located in
different Datacenters but close to eachother.
How can I determine why there are duplicated emails?
What kind of messages should I specifically look for?
Can I set this up for a few selected accounts instead of all accounts like it
was currently? To make sure I do not make things worse for others then needs to
be :-)
The service had been disabled for the time being to prevent the other users
from getting duplicated emails.
Thanks for the advice in advance!
Cheers
Remko
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