I am running two servers with Dovecot v2.2.12 on CentOS x86_64 (5.10 and 6.5 respectively) and users are virtual over ldap.
I have setup our main internal server (vmail.example.com) with dsync replication according to the first part of http://wiki2.dovecot.org/Replication. The second one (vmail1.example.com) will be the failover server which we want to be a real-time mirror (but can be manipulated directly and it should propagate changes back to vmail.example.com).
When I started the server (vmail.example.com), mirroring started and completed fine (after a few hours).
However, since then, I am not seeing a continued mirroring between the two. I would expect changes to one of the masters to be propagated in real time to the other - which does not happen.
If I manually run (on vmail.example.com):
dsync -u imaptester mirror ssh -l root vmail1.example.com dsync -u
imaptesterthen these two accounts are synced.
Question 1: Shouldn't mirroring continue automatically in real time (having configured it as in the first part of http://wiki2.dovecot.org/Replication)? If not, what should I do to enable such a real-time (or near-real-time) sync?
Note that I have not configured "replication_dsync_parameters" as noted at the above page.
Question 2: Where can I find documentation about "replication_dsync_parameters" and about "the doveadm sync command" (referred to at the same page)? I have not been able to locate such a documentation/wiki page.
Question 2a: What do options "-d -N -l 30 -U" signify in "replication_dsync_parameters = -d -N -l 30 -U"?
Thanks, Nick