helloly only supports encrypted login procedures. Unencrypted methods have been deactivated for security reasons.
The following SMTP sending options are supported:
| Protocol | Port | Encryption | Note |
| SMTP-starttls | 587 | starttls | prefered option |
| SMPTS / SMTP-SSL | 465 | SSL | alternative option |
The following SMTP sending options are not supported by helloly:
| Protocol | Port | Encryption | Note |
| SMTP | 25 | none | not supported |
| SMPT-starttls | 25 | starttls | not supported |
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