Can’t send test email

  • I’m using easy WP SMTP plugin along wth yith review for discount plugin. I can’t send test email and customer doesn’t get email with coupon when they submit review.

    The error log shows:

    Heads up! The last email your site attempted to send was unsuccessful.

    Email Source: YITH WooCommerce Review For Discounts Premium
Mailer: Other SMTP
SMTP Error: data not accepted.SMTP server error: DATA END command failed Detail: Mail contain spam content C7B751400FE
SMTP code: 550 Additional SMTP info: 5.7.1

    The page I need help with: [log in to see the link]

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