| Auszug |
|---|
|
Nuclos e-mail parameters: outgoing e-mail server, incoming e-mail server, SMTP, IMAP, POP3, OAuth2, STARTTLS, tenant, 4.2025.3. |
Language: Deutsch · English
E-mail server parameters
Set up e-mail sending and receiving – incoming/outgoing servers as system BOs, connection security and OAuth2.
| Status |
|---|
| colour | Blue |
|---|
| title | Administrator |
|---|
|
| Status |
|---|
| colour | Green |
|---|
| title | Updated: Jul 2026 |
|---|
|
| Status |
|---|
| colour | Grey |
|---|
| title | applies to Nuclos 4.2026.x |
|---|
|
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
Incoming 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. |
Outgoing e-mail server
| 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 (client credentials flow)
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. |
| Warnung |
|---|
| title | Deprecated: legacy parameters |
|---|
|
The former configuration via the system parameters SMTP …, POP3 … and IMAP … is deprecated and may be removed in a future release. New systems should use the system BOs. |
Related pages
Parameter
System parameters.
Open →
SSO configuration
OAuth2.
Open →
