office365 y soporte TLS1.2 RRS feed

  • Pregunta

  • Utilizo este código para enviar correo:

    var host = "";
    var port = 587;
     var smtp = new System.Net.Mail.SmtpClient();
                smtp.Host = host;
                smtp.Port = port;
                smtp.EnableSsl = true;
                smtp.UseDefaultCredentials = false;
                smtp.Credentials = new System.Net.NetworkCredential(user, pass);

    LLega una nota de Office 365 con el fin de soporte TLS1.0 - TLS1.1

    Cómo utilizar TLS 1.2?

    viernes, 19 de julio de 2019 8:25

Todas las respuestas

  • As announced previously (most recently MC152261 in October 2018), TLS1.0 and TLS1.1 are no longer supported in Office 365 as of October 2018. Customers should no longer be using TLS1.0 and TLS1.1 to connect to Exchange Online. While no date has been set, we are working towards setting a date for their removal from the service. If either were found to be compromised before then, we would have no choice but to expedite their removal from Exchange Online.

    [How does this affect me?]

    You are receiving this message because our reporting indicates that your organization is still using one of those unsupported TLS versions to connect to Exchange Online. Mailboxes are still connecting using SMTP Auth client submission via with TLS1.0 or TLS1.1. You can find out which mailboxes by using the SMTP Auth Clients report described in the blog post linked to below.


    [What do I need to do to prepare for this change?]

    You should follow the instructions in the blog post to investigate your organization's TLS usage using the reports provided.


    Using that data, you can take steps to start using TLS1.2.
    viernes, 19 de julio de 2019 8:26