SMTP Error: data not accepted.SMTP

Hi @ericbourges

Thanks for reaching out to us.

I have gotten in touch with our developers to confirm what might be the issue in this case and I will get back to you as soon as we have an update.

Thank you for your patience.

Hi @ericbourges

Thank you for your patience.

Please enable the “Debug Email Sending” option in your WP Mail SMTP > Tools > Debug Events section and share with us the full error log that appears in the Debug Event after the email(s) fails to send.

Hi Dake,

Sorry for the delay, here is the debug:

Mailer: Autre SMTP
SMTP Error: data not accepted.SMTP server error: DATA END command failed Detail: Spam message rejected
SMTP code: 550 Additional SMTP info: 5.2.0
Debug Output:
Connection: opening to mail.infomaniak.com:587, timeout=300, options=array()
Connection: opened
SERVER -> CLIENT: 220 mail.infomaniak.com ESMTP ready
CLIENT -> SERVER: EHLO fr-ovh1-web731.main-hosting.eu
SERVER -> CLIENT: 250-mail.infomaniak.com
250-PIPELINING
250-SIZE
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-AUTH PLAIN LOGIN
250 STARTTLS
CLIENT -> SERVER: STARTTLS
SERVER -> CLIENT: 220 2.0.0 Start TLS
CLIENT -> SERVER: EHLO fr-ovh1-web731.main-hosting.eu
SERVER -> CLIENT: 250-mail.infomaniak.com
250-PIPELINING
250-SIZE
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250 AUTH PLAIN LOGIN
CLIENT -> SERVER: AUTH LOGIN
SERVER -> CLIENT: 334 VXNlcm5hbWU6
CLIENT -> SERVER: [credentials hidden]
SERVER -> CLIENT: 334 UGFzc3dvcmQ6
CLIENT -> SERVER: [credentials hidden]
SERVER -> CLIENT: 235 2.0.0 OK
CLIENT -> SERVER: MAIL FROM:
SERVER -> CLIENT: 250 2.1.0 Ok
CLIENT -> SERVER: RCPT TO:
SERVER -> CLIENT: 250 2.1.5 Ok
CLIENT -> SERVER: DATA
SERVER -> CLIENT: 354 End data with .
CLIENT -> SERVER: Date: Thu, 2 Mar 2023 08:05:03 +0000
CLIENT -> SERVER: To: [email protected]
CLIENT -> SERVER: From: "SansRefrain."
CLIENT -> SERVER: Subject: Des notifications vous attendent
CLIENT -> SERVER: Message-ID:
CLIENT -> SERVER: X-Mailer: WPMailSMTP/Mailer/smtp 3.7.0
CLIENT -> SERVER: MIME-Version: 1.0
CLIENT -> SERVER: Content-Type: text/html; charset=UTF-8
CLIENT -> SERVER: Content-Transfer-Encoding: 8bit
CLIENT -> SERVER:
CLIENT -> SERVER: Bonjour CarlitoB.Des notifications non lues vous attendent dans votre espace SansRefrainRetrouvez-les ici : Mon espaceA très bient?t sur SansRefrain
CLIENT -> SERVER:
CLIENT -> SERVER: .
SERVER -> CLIENT: 550 5.2.0 Spam message rejected
SMTP ERROR: DATA END command failed: 550 5.2.0 Spam message rejected
SMTP Error: data not accepted.

Hi @ericbourges

Thank you for getting back to us.

We see that the “From” header is not correct. It should contain the From email address.

Right now it only contains the name. Is the “Force From Email” option enabled in WP Mail SMTP > Settings?? If yes, then there is a conflict of some kind.

"CLIENT -> SERVER: From: "SansRefrain."

Our initial suspicion is that some code directly modifies the PHPMailer::From property since the PHPMailer would throw an error while the From email settings are in the wp_mail function.

To check for this you can try searching for?$phpmailer->From?string occurrence to find a conflict.

Thank you for your answer
It seems that this was the origin of the problem, I integrated a “From” with the name and the email of the sender in the header, and it works
Have a nice day!
Eric

Hi @ericbourges ,

You’re welcome, we’re happy to hear you were able to resolve the issue.

Have a great weekend ??

Hi guys,
I have encountered a similar problem but I don’t really know if it is.
When I make an email test, I have the following logs:

Versions:
WordPress: 6.1.1
WordPress MS: No
PHP: 8.0.27
WP Mail SMTP: 3.7.0

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: data not accepted.SMTP server error: DATA END command failed Detail: Spam message rejected
SMTP code: 550 Additional SMTP info: 5.2.0
Host: mail.infomaniak.com
Port: 587
SMTPSecure: tls
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.1.1f 31 Mar 2020

Debug:
Email Source: WP Mail SMTP
Mailer: Autre SMTP
SMTP Error: data not accepted.SMTP server error: DATA END command failed Detail: Spam message rejected
SMTP code: 550 Additional SMTP info: 5.2.0

SMTP Debug:
2023-03-04 17:49:39 Connection: opening to mail.infomaniak.com:587, timeout=300, options=array()

2023-03-04 17:49:39 Connection: opened

2023-03-04 17:49:40 SERVER -> CLIENT: 220 mail.infomaniak.com ESMTP ready

2023-03-04 17:49:40 CLIENT -> SERVER: EHLO d-dotterel-fino.instawp.xyz

2023-03-04 17:49:40 SERVER -> CLIENT: 250-mail.infomaniak.com250-PIPELINING250-SIZE250-ETRN250-ENHANCEDSTATUSCODES250-8BITMIME250-DSN250-AUTH PLAIN LOGIN250 STARTTLS

2023-03-04 17:49:40 CLIENT -> SERVER: STARTTLS

2023-03-04 17:49:40 SERVER -> CLIENT: 220 2.0.0 Start TLS

2023-03-04 17:49:40 CLIENT -> SERVER: EHLO d-dotterel-fino.instawp.xyz

2023-03-04 17:49:41 SERVER -> CLIENT: 250-mail.infomaniak.com250-PIPELINING250-SIZE250-ETRN250-ENHANCEDSTATUSCODES250-8BITMIME250-DSN250 AUTH PLAIN LOGIN

2023-03-04 17:49:41 CLIENT -> SERVER: AUTH LOGIN

2023-03-04 17:49:41 SERVER -> CLIENT: 334 VXNlcm5hbWU6

2023-03-04 17:49:41 CLIENT -> SERVER: [credentials hidden]

2023-03-04 17:49:41 SERVER -> CLIENT: 334 UGFzc3dvcmQ6

2023-03-04 17:49:41 CLIENT -> SERVER: [credentials hidden]

2023-03-04 17:49:41 SERVER -> CLIENT: 235 2.0.0 OK

2023-03-04 17:49:41 CLIENT -> SERVER: MAIL FROM:<[email protected]>

2023-03-04 17:49:41 SERVER -> CLIENT: 250 2.1.0 Ok

2023-03-04 17:49:41 CLIENT -> SERVER: RCPT TO:<[email protected]>

2023-03-04 17:49:41 SERVER -> CLIENT: 250 2.1.5 Ok

2023-03-04 17:49:41 CLIENT -> SERVER: DATA

2023-03-04 17:49:42 SERVER -> CLIENT: 354 End data with <CR><LF>.<CR><LF>

2023-03-04 17:49:42 CLIENT -> SERVER: Date: Sat, 4 Mar 2023 17:49:39 +0000

2023-03-04 17:49:42 CLIENT -> SERVER: To: [email protected]

2023-03-04 17:49:42 CLIENT -> SERVER: From: [email protected]

2023-03-04 17:49:42 CLIENT -> SERVER: Subject: WP Mail SMTP: HTML E-mail de test pour [email protected]

2023-03-04 17:49:42 CLIENT -> SERVER: Message-ID: <FiWXlkRUOPb54ouLRcRIuuHDcKu7qsMa3YDKg16mSk@d-dotterel-fino.instawp.xyz>

2023-03-04 17:49:42 CLIENT -> SERVER: X-Mailer: WPMailSMTP/Mailer/smtp 3.7.0

2023-03-04 17:49:42 CLIENT -> SERVER: X-Mailer-Type: WPMailSMTP/Admin/Test

2023-03-04 17:49:42 CLIENT -> SERVER: MIME-Version: 1.0

2023-03-04 17:49:42 CLIENT -> SERVER: Content-Type: text/html; charset=UTF-8

2023-03-04 17:49:42 CLIENT -> SERVER:

2023-03-04 17:49:42 CLIENT -> SERVER: <!doctype html>

2023-03-04 17:49:42 CLIENT -> SERVER: <html lang="en">

2023-03-04 17:49:42 CLIENT -> SERVER: <head>

2023-03-04 17:49:42 CLIENT -> SERVER: <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

2023-03-04 17:49:42 CLIENT -> SERVER: <meta http-equiv="X-UA-Compatible" content="IE=edge">

2023-03-04 17:49:42 CLIENT -> SERVER: <meta name="viewport" content="width=device-width">

2023-03-04 17:49:42 CLIENT -> SERVER: <title>WP Mail SMTP Test Email</title>

2023-03-04 17:49:42 CLIENT -> SERVER: <style type="text/css">@media only screen and (max-width: 599px) {table.body .container {width: 95% !important;}.header {padding: 15px 15px 12px 15px !important;}.header img {width: 200px !important;height: auto !important;}.content, .aside {padding: 30px 40px 20px 40px !important;}}</style>

2023-03-04 17:49:42 CLIENT -> SERVER: </head>

2023-03-04 17:49:42 CLIENT -> SERVER: <body style="height: 100% !important; width: 100% !important; min-width: 100%; -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; -webkit-font-smoothing: antialiased !important; -moz-osx-font-smoothing: grayscale !important; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; margin: 0; Margin: 0; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%; background-color: #f1f1f1; text-align: center;">

2023-03-04 17:49:42 CLIENT -> SERVER: <table border="0" cellpadding="0" cellspacing="0" width="100%" height="100%" class="body" style="border-collapse: collapse; border-spacing: 0; vertical-align: top; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; height: 100% !important; width: 100% !important; min-width: 100%; -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; -webkit-font-smoothing: antialiased !important; -moz-osx-font-smoothing: grayscale !important; background-color: #f1f1f1; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; margin: 0; Margin: 0; text-align: left; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%;">

2023-03-04 17:49:42 CLIENT -> SERVER: <tr style="padding: 0; vertical-align: top; text-align: left;">

2023-03-04 17:49:42 CLIENT -> SERVER: <td align="center" valign="top" class="body-inner wp-mail-smtp" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; border-collapse: collapse !important; vertical-align: top; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; margin: 0; Margin: 0; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%; text-align: center;">

2023-03-04 17:49:42 CLIENT -> SERVER: <!-- Container -->

2023-03-04 17:49:42 CLIENT -> SERVER: <table border="0" cellpadding="0" cellspacing="0" class="container" style="border-collapse: collapse; border-spacing: 0; padding: 0; vertical-align: top; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; width: 600px; margin: 0 auto 30px auto; Margin: 0 auto 30px auto; text-align: inherit;">

2023-03-04 17:49:42 CLIENT -> SERVER: <!-- Header -->

2023-03-04 17:49:42 CLIENT -> SERVER: <tr style="padding: 0; vertical-align: top; text-align: left;">

2023-03-04 17:49:42 CLIENT -> SERVER: <td align="center" valign="middle" class="header" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; border-collapse: collapse !important; vertical-align: top; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; margin: 0; Margin: 0; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%; text-align: center; padding: 30px 30px 22px 30px;">

2023-03-04 17:49:42 CLIENT -> SERVER: <img src="https://d-dotterel-fino.instawp.xyz/wp-content/plugins/wp-mail-smtp/assets/images/email/wp-mail-smtp.png" width="250" alt="WP Mail SMTP Logo" style="outline: none; text-decoration: none; max-width: 100%; clear: both; -ms-interpolation-mode: bicubic; display: inline-block !important; width: 250px;">

2023-03-04 17:49:42 CLIENT -> SERVER: </td>

2023-03-04 17:49:42 CLIENT -> SERVER: </tr>

2023-03-04 17:49:42 CLIENT -> SERVER: <!-- Content -->

2023-03-04 17:49:42 CLIENT -> SERVER: <tr style="padding: 0; vertical-align: top; text-align: left;">

2023-03-04 17:49:42 CLIENT -> SERVER: <td align="left" valign="top" class="content" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; border-collapse: collapse !important; vertical-align: top; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; margin: 0; Margin: 0; text-align: left; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%; background-color: #ffffff; padding: 60px 75px 45px 75px; border-right: 1px solid #ddd; border-bottom: 1px solid #ddd; border-left: 1px solid #ddd; border-top: 3px solid #809eb0;">

2023-03-04 17:49:42 CLIENT -> SERVER: <div class="success" style="text-align: center;">

2023-03-04 17:49:42 CLIENT -> SERVER: <p class="check" style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%; margin: 0 auto 16px auto; Margin: 0 auto 16px auto; text-align: center;">

2023-03-04 17:49:42 CLIENT -> SERVER: <img src="https://d-dotterel-fino.instawp.xyz/wp-content/plugins/wp-mail-smtp/assets/images/email/icon-check.png" width="70" alt="Success" style="outline: none; text-decoration: none; max-width: 100%; clear: both; -ms-interpolation-mode: bicubic; display: block; margin: 0 auto 0 auto; Margin: 0 auto 0 auto; width: 50px;">

2023-03-04 17:49:42 CLIENT -> SERVER: </p>

2023-03-04 17:49:42 CLIENT -> SERVER: <p class="text-extra-large text-center congrats" style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; mso-line-height-rule: exactly; line-height: 140%; font-size: 20px; text-align: center; margin: 0 0 20px 0; Margin: 0 0 20px 0;">

2023-03-04 17:49:42 CLIENT -> SERVER: Congrats, test email was sent successfully!

2023-03-04 17:49:42 CLIENT -> SERVER: </p>

2023-03-04 17:49:42 CLIENT -> SERVER: <p class="text-large" style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; text-align: left; mso-line-height-rule: exactly; line-height: 140%; margin: 0 0 15px 0; Margin: 0 0 15px 0; font-size: 16px;">

2023-03-04 17:49:42 CLIENT -> SERVER: Thank you for trying out WP Mail SMTP. We're on a mission to make sure that your emails actually get delivered.

2023-03-04 17:49:42 CLIENT -> SERVER: </p>

2023-03-04 17:49:42 CLIENT -> SERVER: <p class="text-large" style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; text-align: left; mso-line-height-rule: exactly; line-height: 140%; margin: 0 0 15px 0; Margin: 0 0 15px 0; font-size: 16px;">

2023-03-04 17:49:42 CLIENT -> SERVER: If you find this free plugin useful, please consider giving WP Mail SMTP Pro a try!

2023-03-04 17:49:42 CLIENT -> SERVER: </p>

2023-03-04 17:49:42 CLIENT -> SERVER: <p class="signature" style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%; text-align: left; margin: 20px 0 0 0; Margin: 20px 0 0 0;">

2023-03-04 17:49:42 CLIENT -> SERVER: <img src="https://d-dotterel-fino.instawp.xyz/wp-content/plugins/wp-mail-smtp/assets/images/email/signature.png" width="180" alt="Signature" style="outline: none; text-decoration: none; max-width: 100%; clear: both; -ms-interpolation-mode: bicubic; width: 180px; display: block; margin: 0 0 0 0; Margin: 0 0 0 0;">

2023-03-04 17:49:42 CLIENT -> SERVER: </p>

2023-03-04 17:49:42 CLIENT -> SERVER: <p style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; text-align: left; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%; margin: 0 0 15px 0; Margin: 0 0 15px 0;">

2023-03-04 17:49:42 CLIENT -> SERVER: Jared Atchison<br>Co-Founder, WP Mail SMTP

2023-03-04 17:49:42 CLIENT -> SERVER: </p>

2023-03-04 17:49:42 CLIENT -> SERVER: </div>

2023-03-04 17:49:42 CLIENT -> SERVER: </td>

2023-03-04 17:49:42 CLIENT -> SERVER: </tr>

2023-03-04 17:49:42 CLIENT -> SERVER: <!-- Aside -->

2023-03-04 17:49:42 CLIENT -> SERVER: <tr style="padding: 0; vertical-align: top; text-align: left;">

2023-03-04 17:49:42 CLIENT -> SERVER: <td align="left" valign="top" class="aside upsell-mi" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; border-collapse: collapse !important; vertical-align: top; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; margin: 0; Margin: 0; font-size: 14px; mso-line-height-rule: exactly; line-height: 140%; background-color: #f8f8f8; border-top: 1px solid #dddddd; border-right: 1px solid #dddddd; border-bottom: 1px solid #dddddd; border-left: 1px solid #dddddd; text-align: center !important; padding: 30px 75px 25px 75px;">

2023-03-04 17:49:42 CLIENT -> SERVER: <h6 style="padding: 0; color: #444444; word-wrap: normal; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: bold; mso-line-height-rule: exactly; line-height: 130%; font-size: 18px; text-align: center; margin: 0 0 15px 0; Margin: 0 0 15px 0;">

2023-03-04 17:49:42 CLIENT -> SERVER: Unlock Powerful Features with WP Mail SMTP Pro

2023-03-04 17:49:42 CLIENT -> SERVER: </h6>

2023-03-04 17:49:42 CLIENT -> SERVER: <p class="text-large" style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; mso-line-height-rule: exactly; line-height: 140%; margin: 0 0 15px 0; Margin: 0 0 15px 0; font-size: 16px; text-align: center;">

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2023-03-04 17:49:42 CLIENT -> SERVER: </p>

2023-03-04 17:49:42 CLIENT -> SERVER: <p class="text-large last" style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; mso-line-height-rule: exactly; line-height: 140%; font-size: 13px; text-align: center; margin: 0 0 0 0; Margin: 0 0 0 0;">

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2023-03-04 17:49:42 CLIENT -> SERVER: </p>

2023-03-04 17:49:42 CLIENT -> SERVER: <center style="width: 100%;">

2023-03-04 17:49:42 CLIENT -> SERVER: <table class="button large expanded orange" style="border-collapse: collapse; border-spacing: 0; padding: 0; vertical-align: top; text-align: left; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #e27730; width: 100% !important;">

2023-03-04 17:49:42 CLIENT -> SERVER: <tr style="padding: 0; vertical-align: top; text-align: left;">

2023-03-04 17:49:42 CLIENT -> SERVER: <td class="button-inner" style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; border-collapse: collapse !important; vertical-align: top; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; color: #444; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; margin: 0; Margin: 0; text-align: left; font-size: 14px; mso-line-height-rule: exactly; line-height: 100%; padding: 20px 0 20px 0;">

2023-03-04 17:49:42 CLIENT -> SERVER: <table style="border-collapse: collapse; border-spacing: 0; padding: 0; vertical-align: top; text-align: left; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; width: 100% !important;">

2023-03-04 17:49:42 CLIENT -> SERVER: <tr style="padding: 0; vertical-align: top; text-align: left;">

2023-03-04 17:49:42 CLIENT -> SERVER: <td style="word-wrap: break-word; -webkit-hyphens: auto; -moz-hyphens: auto; hyphens: auto; border-collapse: collapse !important; vertical-align: top; mso-table-lspace: 0pt; mso-table-rspace: 0pt; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-weight: normal; padding: 0; margin: 0; Margin: 0; font-size: 14px; text-align: center; color: #ffffff; background: #e27730; border: 1px solid #c45e1b; border-bottom: 3px solid #c45e1b; mso-line-height-rule: exactly; line-height: 100%;">

2023-03-04 17:49:42 CLIENT -> SERVER: <a  style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; margin: 0; Margin: 0; font-family: Helvetica, Arial, sans-serif; font-weight: bold; color: #ffffff; text-decoration: none; display: inline-block; border: 0 solid #c45e1b; mso-line-height-rule: exactly; line-height: 100%; padding: 14px 20px 12px 20px; font-size: 20px; text-align: center; width: 100%; padding-left: 0; padding-right: 0;">

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2023-03-04 17:49:42 CLIENT -> SERVER: </a>

2023-03-04 17:49:42 CLIENT -> SERVER: </td>

2023-03-04 17:49:42 CLIENT -> SERVER: </tr>

2023-03-04 17:49:42 CLIENT -> SERVER: </table>

2023-03-04 17:49:42 CLIENT -> SERVER: </td>

2023-03-04 17:49:42 CLIENT -> SERVER: </tr>

2023-03-04 17:49:42 CLIENT -> SERVER: </table>

2023-03-04 17:49:42 CLIENT -> SERVER: </center>

2023-03-04 17:49:42 CLIENT -> SERVER: </td>

2023-03-04 17:49:42 CLIENT -> SERVER: </tr>

2023-03-04 17:49:42 CLIENT -> SERVER: </table>

2023-03-04 17:49:42 CLIENT -> SERVER: </td>

2023-03-04 17:49:42 CLIENT -> SERVER: </tr>

2023-03-04 17:49:42 CLIENT -> SERVER: </table>

2023-03-04 17:49:42 CLIENT -> SERVER: </body>

2023-03-04 17:49:42 CLIENT -> SERVER: </html>

2023-03-04 17:49:42 CLIENT -> SERVER:

2023-03-04 17:49:42 CLIENT -> SERVER:

2023-03-04 17:49:42 CLIENT -> SERVER:

2023-03-04 17:49:42 CLIENT -> SERVER: .

2023-03-04 17:49:42 SERVER -> CLIENT: 550 5.2.0 Spam message rejected

2023-03-04 17:49:42 SMTP ERROR: DATA END command failed: 550 5.2.0 Spam message rejected

SMTP Error: data not accepted.

Thanks a lot for your help.
Narijirane

Hi @narijirane

We’ve gone through your error log and we are not seeing any specific errors.

You will need to contact your SMTP provider and ask why they have rejected the message. You should share that log with your SMTP host as well.

Please note that if they are unable to resolve your issue, please create a new support thread instead of responding here and we’ll share some alternatives you can try.