https://community.sinch.com/t5/E-mail-365/Minimum-TLS-version-1-2-enforcement-from-October-18-2023/m-p/12768#M68 <P><SPAN>Sinch will not accept Transport Layer Security (TLS) 1.0 or TLS 1.1 versions for incoming SMTP connections to enforce use of TLS 1.2 or higher from 18-Oct-2023. TLS 1.2 provides strong protection for data sent between client and server.</SPAN></P> <P><BR /><SPAN>This is applicable to the unsubscribe notifications; if the recipient's ISP (like Gmail, Hotmail, Yahoo, etc.) or email Client (like Microsoft Outlook, Mozilla Thunderbird, Apple Mail, etc.) do not enable/use TLS 1.2 or higher, you will no longer receive unsubscribe notifications from 18-Oct-2023.</SPAN></P> Wed, 11 Oct 2023 11:10:16 GMT Shahzad_Ismail 2023-10-11T11:10:16Z https://community.sinch.com/t5/E-mail-365/Minimum-TLS-version-1-2-enforcement-from-October-18-2023/m-p/12768#M68 <P><SPAN>Sinch will not accept Transport Layer Security (TLS) 1.0 or TLS 1.1 versions for incoming SMTP connections to enforce use of TLS 1.2 or higher from 18-Oct-2023. TLS 1.2 provides strong protection for data sent between client and server.</SPAN></P> <P><BR /><SPAN>This is applicable to the unsubscribe notifications; if the recipient's ISP (like Gmail, Hotmail, Yahoo, etc.) or email Client (like Microsoft Outlook, Mozilla Thunderbird, Apple Mail, etc.) do not enable/use TLS 1.2 or higher, you will no longer receive unsubscribe notifications from 18-Oct-2023.</SPAN></P> Wed, 11 Oct 2023 11:10:16 GMT https://community.sinch.com/t5/E-mail-365/Minimum-TLS-version-1-2-enforcement-from-October-18-2023/m-p/12768#M68 Shahzad_Ismail 2023-10-11T11:10:16Z