https://community.sinch.com/t5/Toll-Free-Numbers-TFN/What-happens-when-a-Toll-Free-message-is-identified-as-spam/ta-p/9151 <DIV class="lia-message-template-content-zone"> <P>Messages identified as SPAM will be rejected and error code 255 returned. Sinch continuously monitors for senders with a high number of SPAM rejections. If the SPAM message content is not resolved, the TFN is subject to blocking and deprovisioning.&nbsp;</P> <P>&nbsp;</P> <P>Please see our <A href="https://developers.sinch.com/docs/sms/smpp/10dlc-errors/#toll-free-delivery-report-errors" target="_self">developer docs</A> for more information on error codes.&nbsp;</P> <P>&nbsp;</P> <P><A href="https://sinch.com/phone-numbers/toll-free/text-messaging/" rel="noopener noreferrer" target="_blank"><EM>Learn more about Toll-Free Numbers from Sinch</EM></A><EM>.</EM></P> </DIV> Wed, 08 Apr 2026 09:40:52 GMT Meredith_W 2026-04-08T09:40:52Z https://community.sinch.com/t5/Toll-Free-Numbers-TFN/What-happens-when-a-Toll-Free-message-is-identified-as-spam/ta-p/9151 <DIV class="lia-message-template-content-zone"> <P>Messages identified as SPAM will be rejected and error code 255 returned. Sinch continuously monitors for senders with a high number of SPAM rejections. If the SPAM message content is not resolved, the TFN is subject to blocking and deprovisioning.&nbsp;</P> <P>&nbsp;</P> <P>Please see our <A href="https://developers.sinch.com/docs/sms/smpp/10dlc-errors/#toll-free-delivery-report-errors" target="_self">developer docs</A> for more information on error codes.&nbsp;</P> <P>&nbsp;</P> <P><A href="https://sinch.com/phone-numbers/toll-free/text-messaging/" rel="noopener noreferrer" target="_blank"><EM>Learn more about Toll-Free Numbers from Sinch</EM></A><EM>.</EM></P> </DIV> Wed, 08 Apr 2026 09:40:52 GMT https://community.sinch.com/t5/Toll-Free-Numbers-TFN/What-happens-when-a-Toll-Free-message-is-identified-as-spam/ta-p/9151 Meredith_W 2026-04-08T09:40:52Z