2025-05-13 17:45:20 SERVER -&gt; CLIENT: 220 smtp-out.flockmail.com ESMTP Postfix<br>
2025-05-13 17:45:20 CLIENT -&gt; SERVER: EHLO pedidosec.com<br>
2025-05-13 17:45:20 SERVER -&gt; CLIENT: 250-smtp-out.flockmail.com250-PIPELINING250-SIZE 52428800250-VRFY250-ETRN250-STARTTLS250-AUTH PLAIN LOGIN250-ENHANCEDSTATUSCODES250-8BITMIME250-DSN250 CHUNKING<br>
2025-05-13 17:45:20 CLIENT -&gt; SERVER: STARTTLS<br>
2025-05-13 17:45:20 SERVER -&gt; CLIENT: 220 2.0.0 Ready to start TLS<br>
2025-05-13 17:45:21 CLIENT -&gt; SERVER: EHLO pedidosec.com<br>
2025-05-13 17:45:21 SERVER -&gt; CLIENT: 250-smtp-out.flockmail.com250-PIPELINING250-SIZE 52428800250-VRFY250-ETRN250-AUTH PLAIN LOGIN250-ENHANCEDSTATUSCODES250-8BITMIME250-DSN250 CHUNKING<br>
2025-05-13 17:45:21 CLIENT -&gt; SERVER: AUTH LOGIN<br>
2025-05-13 17:45:21 SERVER -&gt; CLIENT: 334 VXNlcm5hbWU6<br>
2025-05-13 17:45:21 CLIENT -&gt; SERVER: [credentials hidden]<br>
2025-05-13 17:45:21 SERVER -&gt; CLIENT: 334 UGFzc3dvcmQ6<br>
2025-05-13 17:45:21 CLIENT -&gt; SERVER: [credentials hidden]<br>
2025-05-13 17:45:22 SERVER -&gt; CLIENT: 535 5.7.8 Error: authentication failed: UGFzc3dvcmQ6<br>
2025-05-13 17:45:22 SMTP ERROR: Password command failed: 535 5.7.8 Error: authentication failed: UGFzc3dvcmQ6<br>
SMTP Error: Could not authenticate.<br>
2025-05-13 17:45:22 CLIENT -&gt; SERVER: QUIT<br>
2025-05-13 17:45:22 SERVER -&gt; CLIENT: 221 2.0.0 Bye<br>
SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting<br>
Mailer Error: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting