Editing Category:BHUTAN

[[category:Tetra Clients]]
[[category:BHUTAN]]

==Training on Bhutan Project. Dated 16 July 2026 - Tetra Support Staff - Takshay==

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'''Video summary:''' Comprehensive KT session on the Bhutan client's migration from a single-server Zimbra open-source install to a full multi-server Zimbra Network Edition cluster. New architecture: two LDAP nodes with multi-master (MMR) replication, two MTA+proxy nodes, a single mailbox server, a single archive server, a dedicated LDAP/license-daemon node, and two HAProxy+keepalived nodes providing a shared virtual IP as a load balancer in front of the proxy pair (so either proxy can fail without users noticing). Covers building MMR replication between the two LDAP nodes (each pointing to the other as its replication master), the archiving setup (a dedicated, mail-only Class of Service with an auto-created per-user archive account that silently BCCs a copy of every inbound/outbound mail, restored via export from the archive account and import back into the user's mailbox when needed), and the live migration itself -- moving each of the ~400-500 mailboxes one at a time via `zmmboxmove` with the sync happening in the background so users see no disruption. Cutover was done by repointing the HA virtual IP's DNS to the new setup and updating the Barracuda relay IP configuration for external in/out mail; the old single server was then decommissioned via `zmprov deleteServer` once every account was confirmed moved off it. Only client-specific customization requested afterward was their own logo on the Zimbra login/webmail interface.