Title: ERROR Last modified: November 12, 2021 --- # ERROR * Resolved [ThanksManFrance](https://wordpress.org/support/users/agentnew/) * (@agentnew) * [4 years, 10 months ago](https://wordpress.org/support/topic/error-1595/) * hello I installed smtp gmail API plugin and I get this error * 2021-11-12 22:16:16 Connection: opening to smtp.gmail.com:587, timeout=300, options =array ( ‘ssl’ => array ( ‘verify_peer’ => false, ‘verify_peer_name’ => false,‘ allow_self_signed’ => true, ),) 2021-11-12 22:16:16 Connection: opened 2021- 11-12 22:16:16 SMTP INBOUND: “220-sk1.f7-networks.com ESMTP Exim 4.94.2 #2 Fri, 12 Nov 2021 23:16:16 +0100” 2021-11-12 22:16:16 SMTP INBOUND: “220-We do not authorize the use of this system to transport unsolicited,” 2021-11-12 22:16: 16 SMTP INBOUND: “220 and/or bulk e-mail.” 2021-11-12 22:16:16 SERVER -> CLIENT: 220-sk1.f7-networks.com ESMTP Exim 4.94.2 #2 Fri, 12 Nov 2021 23:16:16 +0100 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail. 2021-11-12 22:16:16 CLIENT -> SERVER: EHLO [http://www.roqya-coach.com](http://www.roqya-coach.com) 2021-11-12 22:16:16 SMTP INBOUND: “250-sk1.f7-networks.com Hello [http://www.roqya-coach.com](http://www.roqya-coach.com)[ 5.182.210.39]” 2021-11-12 22:16:16 SMTP INBOUND: “250-SIZE 52428800” 2021-11- 12 22:16:16 SMTP INBOUND: “250-8BITMIME” 2021-11-12 22:16:16 SMTP INBOUND: “250- PIPELINING” 2021-11-12 22:16:16 SMTP INBOUND: “250-PIPE_CONNECT” 2021-11-12 22: 16:16 SMTP INBOUND: “250-AUTH PLAIN LOGIN” 2021-11-12 22:16:16 SMTP INBOUND: “ 250-STARTTLS” 2021-11-12 22:16:16 SMTP INBOUND: “250 HELP” 2021-11-12 22:16:16 SERVER -> CLIENT: 250-sk1.f7-networks.com Hello [http://www.roqya-coach.com](http://www.roqya-coach.com)[ 5.182.210.39]250-SIZE 52428800250-8BITMIME250-PIPELINING250-PIPE_CONNECT250-AUTH PLAIN LOGIN250-STARTTLS250 HELP 2021-11-12 22:16:16 CLIENT -> SERVER: STARTTLS 2021-11-12 22:16:16 SMTP INBOUND: “220 TLS go ahead” 2021-11-12 22:16:16 SERVER- > CLIENT: 220 TLS go ahead 2021-11-12 22:16:16 CLIENT -> SERVER: EHLO [http://www.roqya-coach.com](http://www.roqya-coach.com) 2021-11-12 22:16:16 SMTP INBOUND: “250-sk1.f7-networks.com Hello [http://www.roqya-coach.com](http://www.roqya-coach.com)[ 5.182.210.39]” 2021-11-12 22:16:16 SMTP INBOUND: “250-SIZE 52428800” 2021-11- 12 22:16:16 SMTP INBOUND: “250-8BITMIME” 2021-11-12 22:16:16 SMTP INBOUND: “250- PIPELINING” 2021-11-12 22:16:16 SMTP INBOUND: “250-PIPE_CONNECT” 2021-11-12 22: 16:16 SMTP INBOUND: “250-AUTH PLAIN LOGIN” 2021-11-12 22:16:16 SMTP INBOUND: “ 250 HELP” 2021-11-12 22:16:16 SERVER -> CLIENT: 250-sk1.f7-networks.com Hello [http://www.roqya-coach.com](http://www.roqya-coach.com) [5.182.210.39]250-SIZE 52428800250-8BITMIME250-PIPELINING250-PIPE_CONNECT250-AUTH PLAIN LOGIN250 HELP 2021-11-12 22:16:16 Auth method requested: XOAUTH2 2021-11-12 22:16:16 Auth methods available on the server: PLAIN,LOGIN 2021-11-12 22:16:16 Requested auth method not available: XOAUTH2 2021-11-12 22:16:16 Auth method selected: LOGIN 2021-11- 12 22:16:16 CLIENT -> SERVER: AUTH LOGIN 2021-11-12 22:16:16 SMTP INBOUND: “334 VXNlcm5hbWU6” 2021-11-12 22:16:16 SERVER -> CLIENT: 334 VXNlcm5hbWU6 2021-11- 12 22:16:16 CLIENT -> SERVER: 2021-11-12 22:16:18 SMTP INBOUND: “535 Incorrect authentication data” 2021-11-12 22:16:18 SERVER -> CLIENT: 535 Incorrect authentication data 2021-11-12 22:16:18 SMTP ERROR: Username command failed: 535 Incorrect authentication data SMTP Error: Could not authenticate. 2021-11-12 22:16:18 CLIENT -> SERVER: QUIT 2021-11-12 22:16:18 SMTP INBOUND: “221 sk1.f7-networks.com closing connection” 2021-11-12 22:16:18 SERVER -> CLIENT: 221 sk1.f7-networks.com closing connection 2021-11-12 22:16:18 Connection: closed SMTP connect() failed. [https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting](https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting) The topic ‘ERROR’ is closed to new replies. * ![](https://ps.w.org/gmail-smtp/assets/icon-128x128.png?rev=2432932) * [Gmail SMTP](https://wordpress.org/plugins/gmail-smtp/) * [Frequently Asked Questions](https://wordpress.org/plugins/gmail-smtp/#faq) * [Support Threads](https://wordpress.org/support/plugin/gmail-smtp/) * [Active Topics](https://wordpress.org/support/plugin/gmail-smtp/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/gmail-smtp/unresolved/) * [Reviews](https://wordpress.org/support/plugin/gmail-smtp/reviews/) * 0 replies * 1 participant * Last reply from: [ThanksManFrance](https://wordpress.org/support/users/agentnew/) * Last activity: [4 years, 10 months ago](https://wordpress.org/support/topic/error-1595/) * Status: resolved