Title: Issue “Incorrect authentication data”
Last modified: November 17, 2020

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# Issue “Incorrect authentication data”

 *  Resolved [elliemaffio93](https://wordpress.org/support/users/elliemaffio93/)
 * (@elliemaffio93)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/issue-incorrect-authentication-data/)
 * Hi,
 * I’m having trouble with my contact form, since it’s not sending any emails. It
   just happened out of the blue, without me changing any settings.
 * Into the log file, I’ve seen there’s an issue related to the incorrect authentication
   data. I’ve followed the procedure ([https://postmansmtp.com/incorrect-authentication-data/](https://postmansmtp.com/incorrect-authentication-data/)),
   but it doesn’t work.
    When I run a connectivity test, i get some warnings like
   this one: “Warning: connected to frisbee.host instead of everseensa.com.”
 * Here’s the result of the diagnostic test:
 * Mailer: postsmtp
    HostName: everseensa.com cURL Version: 7.73.0 OpenSSL Version:
   OpenSSL/1.1.1h OS: Linux host.frisbee.host 3.10.0-1062.9.1.el7.x86_64 #1 SMP 
   Fri Dec 6 15:49:49 UTC 2019 x86_64 PHP: Linux 7.1.33 C PHP Dependencies: iconv
   =Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=No, mcrypt=
   Yes, zlib_encode=Yes WordPress: 4.9.15 it_IT UTF-8 WordPress Theme: BonVoyage
   Child WordPress Plugins: Polylang, Contact Form 7, Contact Form CFDB7, Elated
   Core, Elated Instagram Feed, Elated Membership, Elated Tours, Envato Market, 
   Insert Headers and Footers, Cookie and Consent Solution for the GDPR & ePrivacy,
   WPBakery Page Builder, User Profile Picture, Post SMTP, Slider Revolution, W3
   Total Cache, Yoast SEO, WP Cerber Security, Antispam & Malware Scan, WP Review
   Slider, Smush WordPress wp_mail Owner: /home/everseensa/public_html/wp-content/
   plugins/post-smtp/Postman/PostmanWpMailBinder.php WordPress wp_mail Filter(s):
   wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args WordPress phpmailer_init
   Action(s): wpcf7_phpmailer_init, PostsmtpMailer->phpmailer_smtp_init Postman:
   2.0.15 Postman Sender Domain (Envelope|Message): everseensa.com | everseensa.
   com Postman Prevent Message Sender Override (Email|Name): No | No Postman Active
   Transport: SMTP (smtps:plain://mail.everseensa.com:465) Postman Active Transport
   Status (Ready|Connected): Yes | Yes Postman Deliveries (Success|Fail): 0 | 12
 * Could you please help me solve this issue? I’ve read different topics about it
   and I know it might not be related to the plug-i itself, but i’m really having
   trouble with finding the root of the problem.
 * Thank you very much, looking forward to your reply
 * Eleonora
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fissue-incorrect-authentication-data%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 6 replies - 1 through 6 (of 6 total)

 *  [Tim](https://wordpress.org/support/users/tneville/)
 * (@tneville)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/issue-incorrect-authentication-data/#post-13676653)
 * Hi Eleonora [@elliemaffio93](https://wordpress.org/support/users/elliemaffio93/),
 * The warning you are seeing is not overly concerning as your domain everseensa.
   com does seem to be based on the cPanel hosting server at host.frisbee.host. 
   The IPs certainly match.
 * Your authentication seems to be set to ‘Plain’ in your plugin settings. Can you
   try changing it to ‘Login’? Looking at your hosting, it seems to be cPanel based
   so assuming you are using that cPanel server for your SMTP – it will almost definitely**
   not** support _Plain_ login.
 * Please let us know how you get on after that change and whether it succeeds or
   you hit another problem.
 * Kind Regards,
    Tim
    -  This reply was modified 5 years, 5 months ago by [Tim](https://wordpress.org/support/users/tneville/).
      Reason: Unfinished sentence!
 *  Thread Starter [elliemaffio93](https://wordpress.org/support/users/elliemaffio93/)
 * (@elliemaffio93)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/issue-incorrect-authentication-data/#post-13678545)
 * Hi Tim,
 * First of all thank you for the quick answer.
    I tried, as you suggested, to set
   my authentication method to “Login” instead of “Plain”, but I still keep on getting
   the error of “incorrect authentication data” in the log. Also, I checked and 
   you’re right: we are using cPanel server for the SMTP.
 * Here’s the diagnostic test i just run (hope it’s useful):
 * Mailer: postsmtp
    HostName: everseensa.com cURL Version: 7.73.0 OpenSSL Version:
   OpenSSL/1.1.1h OS: Linux host.frisbee.host 3.10.0-1062.9.1.el7.x86_64 #1 SMP 
   Fri Dec 6 15:49:49 UTC 2019 x86_64 PHP: Linux 7.1.33 C PHP Dependencies: iconv
   =Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=No, mcrypt=
   Yes, zlib_encode=Yes WordPress: 4.9.15 it_IT UTF-8 WordPress Theme: BonVoyage
   Child WordPress Plugins: Polylang, Contact Form 7, Contact Form CFDB7, Elated
   Core, Elated Instagram Feed, Elated Membership, Elated Tours, Envato Market, 
   Insert Headers and Footers, Cookie and Consent Solution for the GDPR & ePrivacy,
   WPBakery Page Builder, User Profile Picture, Post SMTP, Slider Revolution, W3
   Total Cache, Yoast SEO, WP Cerber Security, Antispam & Malware Scan, WP Review
   Slider, Smush WordPress wp_mail Owner: /home/everseensa/public_html/wp-content/
   plugins/post-smtp/Postman/PostmanWpMailBinder.php WordPress wp_mail Filter(s):
   wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args WordPress phpmailer_init
   Action(s): wpcf7_phpmailer_init, PostsmtpMailer->phpmailer_smtp_init Postman:
   2.0.15 Postman Sender Domain (Envelope|Message): everseensa.com | everseensa.
   com Postman Prevent Message Sender Override (Email|Name): No | No Postman Active
   Transport: SMTP (smtps:login://mail.everseensa.com:465) Postman Active Transport
   Status (Ready|Connected): Yes | Yes Postman Deliveries (Success|Fail): 0 | 12
 * Thank you very much for your help,
 * Eleonora
 *  [Tim](https://wordpress.org/support/users/tneville/)
 * (@tneville)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/issue-incorrect-authentication-data/#post-13678585)
 * Hi Eleonora,
 * Okay, interesting! Can you run a connectivity test from the plugin settings please,
   and then post a screenshot of the results here? You might need to use something
   like Dropbox or Google Drive to ‘host’ the image temporarily.
 * I’m sure you have, but don’t forget to also check that your username and password
   are correct for the SMTP server. In the case of cPanel the SMTP username is always
   the **full email address** including the “@domain.tld”.
 * Look forward to hearing how that goes! 🙂
 * Kind Regards,
    Tim
 *  Thread Starter [elliemaffio93](https://wordpress.org/support/users/elliemaffio93/)
 * (@elliemaffio93)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/issue-incorrect-authentication-data/#post-13678696)
 * Hi Tim!
 * I just run a connectivity test.
    Unfortunately, I’m having trouble with uploading
   the screenshot (…feeling super stupid). I hope it’s ok to just write down what
   I see:
 * Inside the grid, all status are OPEN and green coloured.
    For the first three
   sockets (mail.everseensa.com:25 – mail.everseensa.com:465 – mail.everseensa.com:
   587 ) everything looks green and ok.
 * I get three warnings in the second part of the test result:
    1) port 25 can be
   used for SMTP to mail.everseensa.com. Warning: connected to frisbee.host instead
   of everseensa.com 2) port 587 can be used for SMTP to mail.everseensa.com. Warning:
   connected to frisbee.host instead of everseensa.com 3) port 465 can be used for
   SMTP to mail.everseensa.com. Warning: connected to frisbee.host instead of everseensa.
   com
 * Hope I included enough details for you to help me.
    Sorry about the screenshot.
   Let me know if you need more info about the connectivity test!
 * Thank you very much,
 * Eleonora
 *  [Tim](https://wordpress.org/support/users/tneville/)
 * (@tneville)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/issue-incorrect-authentication-data/#post-13678702)
 * Hi Eleonora,
 * No worries! Just for testing – can you try switching the SMTP server to `host.
   frisbee.host` (which is the cPanel server and see if it will authenticate?
 * Have you double checked the email and password of the SMTP account you are using?
   Webmail might be a good place to verify the details are correct.
 * Kind Regards,
    Tim
 *  [Tim](https://wordpress.org/support/users/tneville/)
 * (@tneville)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/issue-incorrect-authentication-data/#post-13867660)
 * Hi [@elliemaffio93](https://wordpress.org/support/users/elliemaffio93/),
 * We haven’t heard from you in a while, so I’ll mark this thread as resolved. If
   you have any further questions please feel free to open a new thread, and link
   to this one.
 * Kind Regards,
    Tim

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Issue “Incorrect authentication data”’ is closed to new replies.

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 * [Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App](https://wordpress.org/plugins/post-smtp/)
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 * 6 replies
 * 2 participants
 * Last reply from: [Tim](https://wordpress.org/support/users/tneville/)
 * Last activity: [5 years, 4 months ago](https://wordpress.org/support/topic/issue-incorrect-authentication-data/#post-13867660)
 * Status: resolved