Mcaster1Webmail
Multi-tenant per-domain webmail + groupware + IRC + threat scanning. Replaces Roundcube + Nextcloud + a separate chat server with one Celenite Stack daemon. Tenant-isolated, MFA-aware, AD-federated, threat-scanned at the edge.
What Webmail Will Do
Per-Domain Tenancy
Host webmail for dozens of domains on one daemon. Per-tenant branding, per-tenant policies, per-tenant storage.
Full Webmail
IMAP/SMTP frontend. Threading, search, labels, calendar, contacts, attachments. PGP signature verification inline.
Groupware
Calendar (CalDAV), contacts (CardDAV), shared folders, team channels. Future merging with Mcaster1Chatter.
Built-In IRC + Team Chat
IRC server + Slack-style channels in the same daemon. Bridge between legacy IRC and modern chat clients.
Edge Threat Scanning
Inline ClamAV + reputation checks at receive time. Quarantine UI for admins. Per-tenant policy.
MFA + AD Federation
Password-first, MFA opt-in (TOTP / WebAuthn / Email OTP). Federate users from bthlcorp.local AD via SSSD/LDAP.
Part of the Mcaster1 Ecosystem
Webmail consumes the same auth stack as StackSmith and the same WAF protection as BackDraft. Federated via Keycloak across the Mcaster1 / BTHL realms.