Title: SMTP Error WordPress
Last modified: February 25, 2024

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# SMTP Error WordPress

 *  Resolved [wplinux](https://wordpress.org/support/users/wplinux/)
 * (@wplinux)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/smtp-error-wordpress/)
 * Hi guys,
 * I’ve some issues with sending E-Mails using SMTP in WordPress. I get the following
   error:
 *     ```wp-block-code
       Versions:
       WordPress: 6.4.3
       WordPress MS: No
       PHP: 7.4.33
       WP Mail SMTP: 3.11.1
   
       Params:
       Mailer: smtp
       Constants: No
       ErrorInfo: SMTP Error: Could not authenticate.
       Host: web67.alfahosting-server.de
       Port: 587
       SMTPSecure: tls
       SMTPAutoTLS: bool(true)
       SMTPAuth: bool(true)
   
       Server:
       OpenSSL: OpenSSL 1.0.2k 26 Jan 2017
   
       Debug:
       E-Mail-Quelle WP Mail SMTP
       Mailer: Anderer SMTP-Server
       SMTP Error: Could not authenticate.
   
       SMTP Debug:
       2024-02-25 09:09:03 Connection: opening to web67.alfahosting-server.de:587, timeout=300, options=array()
   
       2024-02-25 09:09:03 Connection: opened
   
       2024-02-25 09:09:03 SERVER -> CLIENT: 220 web67.alfahosting-server.de ESMTP Postfix
   
       2024-02-25 09:09:03 CLIENT -> SERVER: EHLO www.triopsgalaxy.de
   
       2024-02-25 09:09:03 SERVER -> CLIENT: 250-web67.alfahosting-server.de250-PIPELINING250-SIZE 104857600250-ETRN250-STARTTLS250-ENHANCEDSTATUSCODES250-8BITMIME250 DSN
   
       2024-02-25 09:09:03 CLIENT -> SERVER: STARTTLS
   
       2024-02-25 09:09:03 SERVER -> CLIENT: 220 2.0.0 Ready to start TLS
   
       2024-02-25 09:09:03 CLIENT -> SERVER: EHLO www.triopsgalaxy.de
   
       2024-02-25 09:09:03 SERVER -> CLIENT: 250-web67.alfahosting-server.de250-PIPELINING250-SIZE 104857600250-ETRN250-AUTH PLAIN LOGIN250-ENHANCEDSTATUSCODES250-8BITMIME250 DSN
   
       2024-02-25 09:09:03 CLIENT -> SERVER: AUTH LOGIN
   
       2024-02-25 09:09:03 SERVER -> CLIENT: 334 VXNlcm5hbWU6
   
       2024-02-25 09:09:03 CLIENT -> SERVER: [credentials hidden]
   
       2024-02-25 09:09:03 SERVER -> CLIENT: 334 UGFzc3dvcmQ6
   
       2024-02-25 09:09:03 CLIENT -> SERVER: [credentials hidden]
   
       2024-02-25 09:09:03 SERVER -> CLIENT: 535 5.7.8 Error: authentication failed: authentication failure
   
       2024-02-25 09:09:03 SMTP ERROR: Password command failed: 535 5.7.8 Error: authentication failed: authentication failure
   
       SMTP Error: Could not authenticate.
   
       2024-02-25 09:09:03 CLIENT -> SERVER: QUIT
   
       2024-02-25 09:09:03 SERVER -> CLIENT: 221 2.0.0 Bye
   
       2024-02-25 09:09:03 Connection: closed
   
       SMTP Error: Could not authenticate.
       ```
   
 * Can anybody give me some advice so I can take further steps to solve the problem.
   Thank you!

Viewing 1 replies (of 1 total)

 *  Thread Starter [wplinux](https://wordpress.org/support/users/wplinux/)
 * (@wplinux)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/smtp-error-wordpress/#post-17454074)
 * UPDATE: I’ve solved the problem by changing the password.

Viewing 1 replies (of 1 total)

The topic ‘SMTP Error WordPress’ is closed to new replies.

 * ![](https://ps.w.org/wp-mail-smtp/assets/icon-256x256.png?rev=1755440)
 * [WP Mail SMTP by WPForms - The Most Popular SMTP and Email Log Plugin](https://wordpress.org/plugins/wp-mail-smtp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-mail-smtp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-mail-smtp/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-mail-smtp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-mail-smtp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-mail-smtp/reviews/)

 * 1 reply
 * 1 participant
 * Last reply from: [wplinux](https://wordpress.org/support/users/wplinux/)
 * Last activity: [2 years, 3 months ago](https://wordpress.org/support/topic/smtp-error-wordpress/#post-17454074)
 * Status: resolved