The problem
SMTP failures often come from incorrect host, port, TLS mode, DNS, credentials or certificate negotiation.
Recommended approach
Test the SMTP connection separately from the form application so network and application issues are not mixed together.
Step-by-step checklist
- Confirm SMTP hostname and port.
- Match TLS mode to the provider requirement.
- Test connectivity from the web server.
- Verify credentials without exposing them in code.
- Review the exact SMTP error after a controlled test.
MY WAY IT SERVICES
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