Title: Authentification failed
Last modified: February 26, 2020

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# Authentification failed

 *  [dav74](https://wordpress.org/support/users/dav74/)
 * (@dav74)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/authentification-failed/)
 * Hello,
 * All of a sudden today authentication of my emails has failed (I have not changed
   my email passwords). I use Contact Form 7.
 * The only way I can get emails to be sent via the contact form is if I remove 
   authentication in your plugin settings.
 * I was previously using the “plain” authentication. Should I try using something
   else?
 * Any help appreciated. This is the error code:
    5.7.8 Error: authentication failed:
   authentication failure

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [dav74](https://wordpress.org/support/users/dav74/)
 * (@dav74)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/authentification-failed/#post-12485779)
 * Hello again,
 * Before my emails failed to authenticate, I added Google Recaptcha v3.0 to my 
   website (contact form 7). Could that be causing this authentication issue?
 * Any help on resolving this appreciated.
 *  Thread Starter [dav74](https://wordpress.org/support/users/dav74/)
 * (@dav74)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/authentification-failed/#post-12486948)
 * No need reply.
    I have decided that I possibly do not need an SMTP mail plugin
   and left this be handled by our hosting environment. Thanks in any case

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Authentification failed’ 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/)
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 * 2 replies
 * 1 participant
 * Last reply from: [dav74](https://wordpress.org/support/users/dav74/)
 * Last activity: [6 years, 3 months ago](https://wordpress.org/support/topic/authentification-failed/#post-12486948)
 * Status: not resolved