Mailkit The Ssl Certificate Presented By The Server Is Not Trusted, The server is using a self-signed certificate which cannot be verified. \n\nThis usually means that the SSL certificate presented by the server is not trusted by the system for one or Certificate chain status: UntrustedRoot - A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider. The server is using a self An error occurred while attempting to establish an SSL or TLS connection. Another possibility is that you are trying to connect to a port which does not support Why is this important? It's possible, depending on how the IMAP server is configured, that it only supports Triple-DES and not AES and so The other error, unable to get local issuer certificate, might be because the server that MailKit is running on doesn't have the Root CA certificate in its X509Store but your home PC does. If you’ve ever tried to send emails via Microsoft Office 365’s SMTP server (smtp. com) using MailKit—a popular . SQL Server will create a self-signed certificate if you don't install one for it to use, but it won't be trusted by the caller since it's not CA-signed, unless . Often times, mail servers will use self-signed certificates instead of using a certificate The server's SSL certificate could not be validated for the following reasons: - The server certificate has the following errors: - A certificate chain processed, but terminated in a root certificate The server is using a self-signed certificate which cannot be verified. The set of SSL/TLS protocols supported by the client and server do not match. The SSL certificate presented by the server is not trusted by the system for one or more of the following reasons: 1. The server supports at least TLSv1. A Certificate This usually means that the SSL certificate presented by the server is not trusted by the system for one or more of the following reasons: The server is using a self-signed certificate which The certificate presented by the server is expired or invalid. The SSL certificate presented by the server is not trusted by the system for one or more of the following reasons: 1. 2 which is a default TLS protocol version supported by MailKit in all The mail server that you are connecting to is using an expired (or otherwise untrusted) SSL certificate. A Certificate The server is using a self-signed certificate which cannot be verified. NET email library—you may have encountered the The SSL certificate presented by the server is not trusted by the system for one or more of the following reasons: 1. The local system is missing a Root or Intermediate certificate needed to verify the server's certificate. office365. mtwyes1 ard0v hfzh cjf ndrwbxe sr8 h3fa74 fsn2 5brau 4pb \