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Mail send fails with mail account port 25 which does not need authentification.
The problem is that the setting was correct SMTPAuth: false, but the protocol below shows SMTPAuth: bool(true)!!!
Wolfgang
P.S.
Versions:
WordPress: 5.0.1
WordPress MS: No
PHP: 7.3.0RC6
WP Mail SMTP: 1.4.1
Params:
Mailer: smtp
Constants: Yes
ErrorInfo: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
Host: xyz
Port: 25
SMTPSecure: string(0) “”
SMTPAutoTLS: bool(false)
SMTPAuth: bool(true)
Server:
OpenSSL: OpenSSL 1.1.0f 25 May 2017
SMTP Debug:
2018-12-15 08:19:28 CLIENT -> SERVER: EHLO timeshare-talk.info
2018-12-15 08:19:28 SMTP Error: Could not authenticate.
2018-12-15 08:19:28 CLIENT -> SERVER: QUIT
2018-12-15 08:19:28 SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting