2024-12-04 08:41:15 SERVER -&gt; CLIENT: 220 SG ESMTP service ready at geopod-ismtpd-1<br>
2024-12-04 08:41:15 CLIENT -&gt; SERVER: EHLO urtestsite.com<br>
2024-12-04 08:41:16 SERVER -&gt; CLIENT: 250-smtp.sendgrid.net250-8BITMIME250-PIPELINING250-SIZE 31457280250-STARTTLS250-AUTH PLAIN LOGIN250 AUTH=PLAIN LOGIN<br>
2024-12-04 08:41:16 CLIENT -&gt; SERVER: STARTTLS<br>
2024-12-04 08:41:16 SERVER -&gt; CLIENT: 220 Begin TLS negotiation now<br>
2024-12-04 08:41:16 CLIENT -&gt; SERVER: EHLO urtestsite.com<br>
2024-12-04 08:41:16 SERVER -&gt; CLIENT: 250-smtp.sendgrid.net250-8BITMIME250-PIPELINING250-SIZE 31457280250-STARTTLS250-AUTH PLAIN LOGIN250 AUTH=PLAIN LOGIN<br>
2024-12-04 08:41:16 CLIENT -&gt; SERVER: AUTH LOGIN<br>
2024-12-04 08:41:17 SERVER -&gt; CLIENT: 334 VXNlcm5hbWU6<br>
2024-12-04 08:41:17 CLIENT -&gt; SERVER: [credentials hidden]<br>
2024-12-04 08:41:17 SERVER -&gt; CLIENT: 334 UGFzc3dvcmQ6<br>
2024-12-04 08:41:17 CLIENT -&gt; SERVER: [credentials hidden]<br>
2024-12-04 08:41:17 SERVER -&gt; CLIENT: 535 Authentication failed: The provided authorization grant is invalid, expired, or revoked<br>
2024-12-04 08:41:17 SMTP ERROR: Password command failed: 535 Authentication failed: The provided authorization grant is invalid, expired, or revoked<br>
SMTP Error: Could not authenticate.<br>
2024-12-04 08:41:17 CLIENT -&gt; SERVER: QUIT<br>
2024-12-04 08:41:17 SERVER -&gt; CLIENT: <br>
2024-12-04 08:41:17 SMTP ERROR: QUIT command failed: <br>
SMTP Error: Could not authenticate.<br>
SMTP test failed: SMTP Error: Could not authenticate.SMTP server error: QUIT command failed