Gmail mailer: cURL error 60: SSL certificate problem:

  • Resolved VanAwful

    (@vanawful)


    5 years, 8 months ago

    This topic was posted over a year and marked resolved, but resolution does not help me. I am having this same issue and my server hosting has no clue how to fix. They are asking me how to recreate the problem. Since I do not know what the plugin is doing to create the problem, I have no response for them.

    Versions:
    WordPress: 5.2.2
    WordPress MS: No
    PHP: 7.3.6
    WP Mail SMTP: 1.5.2

    Params:
    Mailer: gmail
    Constants: No
    Client ID/Secret: Yes
    Auth Code: Yes
    Access Token: Yes

    Server:
    OpenSSL: OpenSSL 1.1.1b 26 Feb 2019
    PHP.allow_url_fopen: Yes
    PHP.stream_socket_client(): Yes
    PHP.fsockopen(): Yes
    PHP.curl_version(): 7.64.0

    Debug:
    Mailer: Gmail
    cURL error 60: SSL certificate problem: unable to get local issuer certificate (see https://curl.haxx.se/libcurl/c/libcurl-errors.html)

Viewing 3 replies - 1 through 3 (of 3 total)

  • Hi @vanawful,

    I apologize for any confusion. It’s the issue of the SSL certificate your web server is serving. Your hosting provider should be able to fix this. You can provide them the Debug: section of the output above, it will be clear for them what to do.

    Alternatively, you can disable SSL verification by adding the custom codes. You should not do this unless you have to – it’s compromising your security.

    In case it helps, here’s a tutorial on where and how to add custom codes like that.

    I hope this helps!

    Thread Starter VanAwful

    (@vanawful)

    Sorry, that does not help. I provided it to my hosting and they need to know how to recreate the problem. It only exist with this plugin. I removed the plugin fully and reinstalled and now it will not get past the “Allow plugin to send emails using your Google account” button. I click on it, select the account and it says it completed but the button is still there. It will not allow me to send a test email; states there is a setting problem.

    I spent too much time on this. At this point I will just remove the plugin and look for another.

    Hi VanAwful,

    I’m sorry to hear that didn’t help. The issue is definitely due to server misconfiguration and your hosting provider should have the ability to fix this, you can share the ‘Debug’ section of the above error details with them.

    For the Gmail mailer, if you are not allowed to send a test email, the mailer is not configured properly. Please make sure of the details like Client ID, Client secret. In case it helps, you can redo all the steps in our tutorial.

    I hope this helps!

Viewing 3 replies - 1 through 3 (of 3 total)
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