On Fri, 8 Jul 2016, WK wrote:
On 7/7/2016 7:47 PM, David Lang wrote:
I started with Cyrus. How would Dovecot be any better? Does it have
back-end replication/clustering/failover like Cyrus does? or some other
feature that would let me replicate/split my mail repository?
I routinely have high tens of thousands, to low hundreds of thousands of
mail in a single folder, cyrus handles that well (even without a SSD), how
would Dovecot handle that?
Dovecot has their dsync tool (kind of like rsync for Maildirs).
It works extremely well.
We have a several clients at $dayjob who maintain their IMAP servers in
VMs/HW Servers here and then dsync down to a dovecot/postfix box at their
office. That way, they always have a local copy for when they are at their
office. It cuts down on the junk traffic out the gateway when you have a
limited office internet connection shared by a bunch of employees.
They also rate limit outbound SMTP from the office mailserver's outbound
queue. The employees can dump email into the queue at line speed, but the
outgoing SMTP doesn't suck all the BW out of the connection when its a bunch
of huge files.
Then of course for mobile and their home, they just point their imap client
at the public VM.
so does this allow for a message to be deleted on the office server and then
have it disappear from the public VM? or is it a one-way sync?
how upt-to-the-minute can this be? (i.e. how long between deleting things in one
place and having them disappear in the other place). Thinking about fail trees
with hundreds of thousands to millions of messages in them.
David Lang
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