Hello Dynu Support Team,

I am currently experiencing an issue with your email hosting service. My application is receiving HTTP 500 Internal Server Error responses whenever it attempts to send emails through your SMTP server.

The exact error message is:

```text
Error al enviar correo: Mail server connection failed.
Failed messages: jakarta.mail.MessagingException:
Got bad greeting from SMTP host: fdxsoft-com-smtp.dynu.com,
port: 587, response: [EOF]
```

**SMTP Server Details:**
- SMTP Host: fdxsoft-com-smtp.dynu.com
- Port: 587
- Protocol: SMTP Submission (STARTTLS)

Your SMTP server appears to be closing the connection without sending the expected SMTP greeting, resulting in an `[EOF]` response.

As a consequence, my email-sending service is currently unavailable, and I am unable to deliver emails to my users.

Could you please investigate this issue as soon as possible and confirm whether there is an ongoing SMTP server outage, maintenance activity, or any other infrastructure-related problem?

I would appreciate your prompt assistance in restoring the service.

Best regards,