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Setup guides

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The Administration manual describes grommunio as a system. The guides in this section are task-oriented: each one takes a single component or operational topic from prerequisites to a verified, working result, with a verification checklist and a troubleshooting table at the end.

All guides assume a working grommunio installation — the appliance set up as described in the Quickstart, with DNS, TLS and the first domain and user in place. Start with the post-installation checklist if you have just finished grommunio-setup.

Post-installation checklistVerify services, repositories and ports; set up MX, SPF, DKIM and DMARC; prove end-to-end mail flow.
Antispam (Rspamd)Understand scores and actions, test safely, train Bayes, manage allow/deny lists and operate grommunio-antispam.
SSO with KeycloakCentral login and MFA for grommunio Web and the collaboration apps with grommunio-auth and Keycloak.
MeetDeploy browser-based video conferencing, optionally behind SSO, and connect it to the calendar.
ChatSet up team messaging, activate it per domain and user, and verify multi-tenancy.
Files & OfficeFile sync and online document editing, integrated with grommunio Web.
ArchiveCompliance e-mail archiving with full-text search and restore into the mailbox.
Mobile devices (EAS)Exchange ActiveSync for phones and tablets: enable, connect, manage devices and policies, remote wipe.
Backup & restoreConsistent backups, a full disaster-recovery rehearsal and single-mailbox restores.
Section titled “Related topics elsewhere”
  • High availability — the Pacemaker/DRBD reference cluster, including failover test scenarios.
  • Kerberos SSO — transparent sign-in for domain-joined Windows clients (the alternative to Keycloak-based SSO).
  • IMAP migration with imapsync — moving mailboxes from any IMAP server.
  • Operations — TLS, updates, backup artefacts and size limits.

Offline reading

Section titled “Offline reading”

This section is also available to download for offline use: