Nuclos e-mail parameters: outgoing e-mail server, incoming e-mail server, SMTP, IMAP, POP3, OAuth2, STARTTLS, tenant, 4.2025.3. |
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Set up e-mail sending and receiving – incoming/outgoing servers as system BOs, connection security and OAuth2.
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From Nuclos 4.2025.3, e-mail sending and receiving are configured via the system BOs outgoing e-mail server and incoming e-mail server (instead of individual system parameters).
Configuring the e-mail server
| Field | Meaning |
|---|---|
| Name | must be unique. |
| Order | without a server given, the active server with the lowest number is used. |
| Type | IMAP or POP3. |
| Server / port | host and port of the IMAP/POP3 service. |
| Connection security | None, SSL/TLS, STARTTLS. |
| Authentication | OAuth2 or Password. |
| Server directory | folder to read from (default INBOX). |
| Move deleted messages to | target folder for deleted messages. |
| Tenants | assign the configuration to a tenant (context on retrieval). |
| Test | test retrieval – preferably with a mailbox holding few messages. |
| Field | Meaning |
|---|---|
| Name | must be unique. |
| Order | without a server given, the active server with the lowest number is used. |
| Server / port | host and port of the SMTP service. |
| Connection security | None, SSL/TLS, STARTTLS. |
| Authentication | None, OAuth2 or Password. |
| Sender address | address to send from. |
| Tenants | assign the configuration to a tenant (context on sending). |
| Test | sends a test e-mail to the given recipient. |
OAuth2 is supported for sending and receiving. As Nuclos acts as a backend service, the client credentials flow is used – after the initial setup by an administrator no further user interaction is needed.
| Field | Meaning |
|---|---|
| Token endpoint | endpoint to obtain a valid token. |
| Client ID | unique identifier of the client. |
| Client secret | shared secret of the client. |
| Scopes | scope of the token. |
The former configuration via the system parameters |