How to Fix SSL Handshake Failed Error in cPanel
Posted about 10 months ago 4.8kSSL Handshake Failed Causes
Common in email clients: Cannot connect securely.
Check SSL Certificate
cPanel → SSL/TLS Status → Ensure valid certificate installed.
Email Client Fixes
Use Correct Ports
IMAP SSL: 993
POP3 SSL: 995
SMTP SSL: 465
IMAP TLS: 143 (STARTTLS)
SMTP TLS: 587 (STARTTLS)Use Correct Hostname
mail.yourdomain.com instead of localhost or server IP.
Solutions Table
| Cause | Solution |
|---|---|
| Expired cert | Run AutoSSL |
| Wrong port | Use 465/993 for SSL |
| SNI issue | Use mail.yourdomain.com |
| Old client | Update email app |