How about using ceph / glusterfs? and then you need some ldap or similar userdatabase or mysql cluster..
Eero On Wed 24. Mar 2021 at 12.16, Patrick Chemla <patrick.che...@perfaction.net> wrote: > Hi, > > > Apparently, searching Google, I still can't find a good solution to build > a fault tolerant emails platform. > > > Is there any good solution to synchronize 2 emails servers, including > incoming mails, having users connected to any of the server? > > > I am looking for such architecture for long time, and from time to time > the question come again. > > > Thanks for any idea. > > > Patrick >