Overview
cURL errors often indicate that your server’s cURL library is outdated or incompatible with your SMTP plugin. These errors are typically server-related rather than issues with the SMTP plugin itself.
Causes
There are two main reasons why cURL errors occur:
- Outdated cURL library: Your server’s cURL library may be outdated, leading to compatibility issues.
- Incompatible SMTP server: Your chosen SMTP server (mailer) might be incompatible with your server’s cURL version.
cURL errors often include a number (e.g., cURL error 28). Regardless of the specific number, these errors generally indicate the same underlying issue – an outdated or incompatible cURL version on your server.
Solution
To resolve cURL errors, you have two main options:
- Update your server’s cURL library: Contact your web hosting support for guidance on updating the cURL library. The exact steps will vary depending on your web hosting provider.
- Switch to a different mailer: If your current mailer is incompatible with your server, consider switching to a different one. We recommend using the SendLayer mailer to ensure emails from your site get delivered.
That’s it! Now you know how to troubleshoot and fix cURL errors on your SMTP plugin.
Want to ensure emails from your site are delivered promptly? Consider configuring an additional connection to use as a backup mailer.