SMTP authentication errors occur when your email client or script fails to log in to the mail server to send emails.
Common reasons:
- Incorrect email address or password
- Using wrong SMTP port or encryption method
- SMTP server restrictions (Akashi Hosting’s SMTP is local-only)
- Account locked or password recently changed but not updated in the client
How to fix:
- Double-check your email username and password
- Use SMTP port 465 with SSL or 587 with STARTTLS as recommended
- Ensure your script or application is running on the same hosting server (local SMTP only)
- Update saved passwords after changes
- If you suspect account issues, reset your email password in cPanel
If errors persist, open a support ticket with error details for help.
