SMTP settings
Administration → Settings → SMTP
This is where you set up the server through which SilentChat sends its emails — invitations, verifications, password resets, notifications.
Configuration
Host · Port · Username · Password · Sender email.
The usual port for submission is 587 with STARTTLS.
Test Connection
Send Test sends a real email to a specified address. If it fails, the message indicates the step at which it failed — connection, login, or handover. This is the difference between "wrong password" and "port blocked".
Diagnostics
Run Diagnostics checks three things individually:
| Check | Answers |
|---|---|
| DNS Resolution | Does the hostname resolve, and to which addresses? |
| TCP Connection | Does the server accept connections on this port at all? |
| TLS Certificate | Issuer and remaining validity. |
The diagnostics show values, not just traffic lights — resolved addresses, host and port, issuer and remaining validity. A traffic light without a value would only leave the path to the server console in case of doubt.
Regarding the TLS line: If it appears at all, DNS and TCP were in order — in case of a connection error, the diagnostics exit earlier and do not show any TLS information.
If sending works but diagnostics complain
Then the diagnostics are meant, not the mail route. The most reliable proof remains the test send: If the email arrives, the sending works.