Title: Authentication Error
Last modified: September 23, 2022

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# Authentication Error

 *  Resolved [gravatard](https://wordpress.org/support/users/gravatard/)
 * (@gravatard)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/authentication-error-21/)
 * Greetings,
 * I keep getting status 5.7.1 failed message upon test email.
 * Post SMTP > Settings > Authentication > Username/Password fields are grayed out
   and I can’t update the values from a previous entry.
 * I try running your setup wizard and entering the new credentials, but it doesn’t
   keep the changes. Always reverts back to old credentials.
 * Is this a known bug with your plugin? Do I need to reset the plugin to remove
   the old entrenched data?

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Support [M Haseeb](https://wordpress.org/support/users/haseeb0001/)
 * (@haseeb0001)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/authentication-error-21/#post-16037742)
 * [@gravatard](https://wordpress.org/support/users/gravatard/) Hi,
 * Hope you are doing good.
 * This issue is from the hosting side, you can get more details from [this thread](https://wordpress.org/support/topic/5-7-1-message-rejected-due-to-content-policy/).
 * Also, try to reset the plugin and configure it again and then let me know about
   this.
 * Thanks
    -  This reply was modified 3 years, 8 months ago by [M Haseeb](https://wordpress.org/support/users/haseeb0001/).
 *  Thread Starter [gravatard](https://wordpress.org/support/users/gravatard/)
 * (@gravatard)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/authentication-error-21/#post-16038768)
 * Hi [@haseeb0001](https://wordpress.org/support/users/haseeb0001/),
 * Unfortunately that thread is not relevant to my issue. My email host is PrivateEmail.
   com, but the issue seems to stem from Post SMTP plugin not allowing me to update
   the username/password fields.
 * I reset the plugin using the reset option within your settings page, which deleted
   the email logs, but didn’t solve the issue. Running the wizard again I ended 
   up in the exact spot as before with the wrong email account grayed out.
 * Deleting and reinstalling your plugin didn’t solve the issue either. The same
   old (wrong) username/password was there and unable to be changed.
 * There is clearly a bug within your plugin that needs review. From uneditable 
   username/password fields in wizard/manual setup, through settings that don’t 
   get wiped from the database upon uninstall.
 * Regardless, I enjoy your plugin when it works and hope to not have to switch.
   Thanks!
 *  Plugin Support [M Haseeb](https://wordpress.org/support/users/haseeb0001/)
 * (@haseeb0001)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/authentication-error-21/#post-16040200)
 * [@gravatard](https://wordpress.org/support/users/gravatard/)
 * Can you please share a video of this issue? so we can check this, we are already
   trying to reproduce this issue but still, we didn’t get this error on our staging
   websites.
 * Also, share the Post SMTP Diagnostic test report and Screenshot of Settings >
   Account Tab.
 * Thanks
 *  Thread Starter [gravatard](https://wordpress.org/support/users/gravatard/)
 * (@gravatard)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/authentication-error-21/#post-16086600)
 * Hi, I shared a staging site with your website support team and they discovered
   the issue. Thanks. This issue has been resolved by following the requested steps
   to remove this code from wp-config: [https://postmansmtp.com/post-smtp-1-9-0-better-support-for-secure-delivery/](https://postmansmtp.com/post-smtp-1-9-0-better-support-for-secure-delivery/)
 * However, despite being able to enter new username/password, I was still getting
   authentication error. I was able to resolve that by choose SSL over TLS and following
   this article to add DMARC record for domain: [https://wpmailsmtp.com/how-to-create-dmarc-record/](https://wpmailsmtp.com/how-to-create-dmarc-record/)
 *  Plugin Support [M Haseeb](https://wordpress.org/support/users/haseeb0001/)
 * (@haseeb0001)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/authentication-error-21/#post-16089045)
 * [@gravatard](https://wordpress.org/support/users/gravatard/) Great, thank you
   so much for the update.
 * Thanks

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Authentication Error’ is closed to new replies.

 * ![](https://ps.w.org/post-smtp/assets/icon-128x128.gif?rev=3209655)
 * [Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App](https://wordpress.org/plugins/post-smtp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/post-smtp/#faq)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/post-smtp/unresolved/)
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 * 5 replies
 * 2 participants
 * Last reply from: [M Haseeb](https://wordpress.org/support/users/haseeb0001/)
 * Last activity: [3 years, 8 months ago](https://wordpress.org/support/topic/authentication-error-21/#post-16089045)
 * Status: resolved