Hello everybody,I am running dovecot 2.1.7 on Debian Wheezy on two servers with replication set up, MTA is postfix. The idea is to have a redundant mail system so that when one server fails, users can continue using the other server (failover of POP/IMAP through DNS redirection). Servers are called srv06 and srv07:
Below is the dovecot config, both servers have identical config, only the replica srv0x address is different. I read to put this line into 10-mail.conf and I did:
mail_plugins = $mail_plugins notify replicationMy Problem: When E-Mail arrives on one server, it is only available on the other server many hours later. Same behaviour in both directions. This means I see different mailboxes via IMAP depending on which server I connect to - in theory I want the client not to be able to tell which server it is connected to.
dovecot -n:
# 2.1.7: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.1 ext4
auth_mechanisms = plain login cram-md5
disable_plaintext_auth = no
log_timestamp = "%Y-%m-%d %H:%M:%S "
mail_location = maildir:/home/%d/%n/Maildir
mail_privileged_group = mail
passdb {
args = /etc/dovecot/dovecot-sql.conf
driver = sql
}
plugin {
mail_replica = remote:vm...@srv07.xxx
quota = maildir:User quota
quota_rule = *:storage=1GB
replication_full_sync_interval = 1 hours
}
protocols = imap pop3
service aggregator {
fifo_listener replication-notify-fifo {
mode = 0600
user = vmail
}
unix_listener replication-notify {
mode = 0600
user = vmail
}
}
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0660
user = postfix
}
user = root
}
service config {
unix_listener config {
user = vmail
}
}
service doveadm {
user = vmail
}
service replicator {
process_min_avail = 1
}
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
args = /etc/dovecot/dovecot-sql.conf
driver = sql
}
protocol imap {
mail_plugins = quota imap_quota
}
protocol pop3 {
mail_plugins = quota
pop3_uidl_format = %08Xu%08Xv
}
protocol lda {
mail_plugins = quota
postmaster_address = mk@xxx
}
output of cat /var/log/mail.log | grep dsync:
Oct 7 05:31:45 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1522,
file=1381075321.V902I19a2a66M626453.srv07.xxxxx:2,)
Oct 7 05:31:45 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1523,
file=1381075381.V902I19a2bb2M737865.srv07.xxxxx:2,)
Oct 7 05:31:45 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1524,
file=1381075441.V902I19a3185M959529.srv07.xxxxx:2,)
Oct 7 05:31:45 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1525,
file=1381075501.V902I19a3187M989935.srv07.xxxxx:2,)
Oct 7 05:31:45 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1526,
file=1381075561.V902I19a3188M971187.srv07.xxxxx:2,)
Oct 7 05:31:45 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1527,
file=1381075622.V902I19a3189M60093.srv07.xxxxx:2,)
Oct 7 05:31:45 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1528,
file=1381075682.V902I19a318aM231725.srv07.xxxxx:2,)
Oct 7 05:31:45 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1529,
file=1381075741.V902I19a318bM353115.srv07.xxxxx:2,)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1530,
file=1381075801.V902I19a318cM609633.srv07.xxxxx:2,)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1531,
file=1381075861.V902I19a318dM392514.srv07.xxxxx:2,)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1532,
file=1381075921.V902I19a318eM521040.srv07.xxxxx:2,)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1533,
file=1381075981.V902I19a318fM611775.srv07.xxxxx:2,)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1534,
file=1381076041.V902I19a3190M734263.srv07.xxxxx:2,)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1535,
file=1381076101.V902I19a3191M850303.srv07.xxxxx:2,)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1536,
file=1381076881.V902I19a3192M362845.srv07.xxxxx:2,S)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1537,
file=1380998413.V902I19a315bM206668.srv07.xxxxx:2,e)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1538,
file=1380999043.V902I19a315cM413578.srv07.xxxxx:2,e)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1539,
file=1380574384.V902I19a3146M616434.srv07.xxxxx:2,e)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Error: remote:
dsync-remote(sysop@xxxxx): Warning: Maildir /home/xxxxx/sysop/Maildir:
Expunged message reappeared, giving a new UID (old uid=1540,
file=1381110251.V902I19a3186M993173.srv07.xxxxx)
Oct 7 05:31:46 srv06 dovecot: dsync-local(sysop@xxxxx): Warning:
Mailbox changes caused a desync. You may want to run dsync again.
However, I cannot understand what this log wants to tell me? Please advise. Thanks.
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