2025-12-25 14:54:14 SERVER -&gt; CLIENT: 220-ryzen.bahiaservers.com ESMTP Exim 4.99 #2 Thu, 25 Dec 2025 11:54:14 -0300 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail.<br>
2025-12-25 14:54:14 CLIENT -&gt; SERVER: EHLO www.fbnet.com.ar<br>
2025-12-25 14:54:14 SERVER -&gt; CLIENT: 250-ryzen.bahiaservers.com Hello www.fbnet.com.ar [162.55.101.166]250-SIZE 52428800250-LIMITS MAILMAX=1000 RCPTMAX=50000250-8BITMIME250-PIPELINING250-PIPECONNECT250-AUTH PLAIN LOGIN250 HELP<br>
2025-12-25 14:54:14 CLIENT -&gt; SERVER: AUTH LOGIN<br>
2025-12-25 14:54:14 SERVER -&gt; CLIENT: 334 VXNlcm5hbWU6<br>
2025-12-25 14:54:14 CLIENT -&gt; SERVER: [credentials hidden]<br>
2025-12-25 14:54:14 SERVER -&gt; CLIENT: 334 UGFzc3dvcmQ6<br>
2025-12-25 14:54:14 CLIENT -&gt; SERVER: [credentials hidden]<br>
2025-12-25 14:54:17 SERVER -&gt; CLIENT: 535 Incorrect authentication data<br>
2025-12-25 14:54:17 SMTP ERROR: Password command failed: 535 Incorrect authentication data<br>
SMTP Error: Could not authenticate.<br>
2025-12-25 14:54:17 CLIENT -&gt; SERVER: QUIT<br>
2025-12-25 14:54:17 SERVER -&gt; CLIENT: 221 ryzen.bahiaservers.com closing connection<br>
SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting<br>
<h2> ERROR</h2>