Dovecot Replica one user at a time

Claudio Corvino ccorvino at
Mon Oct 11 19:08:42 EEST 2021

Hi all,

I have two IMAP/LMTP Dovecot server in replica (version for 
testing purposes, both connected through an IPsec tunnel, I use LDAP/AD 
for /userdb, /all seems to work fine.

Now I would like to go in production where at the moment I have only one 
server active and setup the replica too ... but! I need to know how I 
can exclude all the users from replication (help/examples appreciated!) 
and doing replication one user at a time, in order to not saturate 
bandwidth on the IPsec tunnel.

I read

"Since v2.3.1 you can disable replication for a user by providing 
'noreplicate' user database field 
<>. Another way to 
disable replication for some users is to return mail_replica field from 
userdb for users you want to replicate."

but I can't figure out how to do it.

One last question: since I have to deal with huge mailboxes, if prior to 
activate replication I do an rsync between the two Dovecot filesystems, 
does the replication will work?

Thanks in advance!



*Claudio Corvino
IT Systems Administrator*

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