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Overview The ‘Gmail cURL error 77: error setting certificate verify locations’ issue occurs when setting up an SMTP server with Gmail’s API. Although it relates to Gmail’s API, it often occurs due to issues from your site’s hosting server and not your SMTP plugin. Causes The Gmail cURL error 77 issue is often caused by […]
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Overview The ‘error 451-4.4.2 timeout’ issue often occurs on sites using Gmail’s API to send emails. This error indicates that while the connection between your SMTP server and the recipient’s email server was established successfully, it closed before sending the email due to a timeout. Causes These are some of the common causes of the […]
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Overview SMTP error 442 is a server response indicating a temporary failure when sending emails through your site. This error often occurs when using the Other SMTP mailer to send emails. Causes There are several reasons why SMTP error 442 might occur. Below, we’ve highlighted the most common causes: Network issues: The most common cause […]
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Overview The ‘SMTP error 451-4.3.0’ typically indicates a temporary issue on the mail server’s side. This error can prevent your site emails from being successfully sent to the intended recipient(s). Causes There are several reasons why the ‘SMTP error 451 4.3.0’ might occur. These are the most common causes: Network issues: Temporary problems with your […]
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Overview The ‘SMTP2GO E_ApiResponseCodes.ENDPOINT_PERMISSION_DENIED’ error typically occurs when sending emails through the SMTP2GO email service. It indicates the API key you configured doesn’t have permission to send emails. Causes The primary cause of this error is using an API key that doesn’t have the correct permissions to send emails on your behalf. Solution To resolve […]
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Overview cURL errors often indicate that your server’s cURL library is outdated or incompatible with your SMTP plugin.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 Causes There are two main reasons why cURL errors occur: Outdated cURL library: Your server’s cURL library may be outdated, leading to compatibility issues. […]