Hallo Zusammen
Seit dem Update auf V15 funktioniert leider der Mailversand bei uns nicht mehr.
es wird der 3CX- SMTP- Server genutzt.
Fehlermeldung :
An error occurred while attempting to establish an SSL or TLS connection. The SSL certificate presented by the server is not trusted by the system for one or more of the following reasons: 1. The server is using a self-signed certificate which cannot be verified. 2. The local system is missing a Root or Intermediate certificate needed to verify the server's certificate. 3. The certificate presented by the server is expired or invalid. See https://github.com/jstedfast/MailKit/blob/master/FAQ.md#InvalidSslCertificate for possible solutions.
Vielen dank für eure Hilfe!
Seit dem Update auf V15 funktioniert leider der Mailversand bei uns nicht mehr.
es wird der 3CX- SMTP- Server genutzt.
Fehlermeldung :
An error occurred while attempting to establish an SSL or TLS connection. The SSL certificate presented by the server is not trusted by the system for one or more of the following reasons: 1. The server is using a self-signed certificate which cannot be verified. 2. The local system is missing a Root or Intermediate certificate needed to verify the server's certificate. 3. The certificate presented by the server is expired or invalid. See https://github.com/jstedfast/MailKit/blob/master/FAQ.md#InvalidSslCertificate for possible solutions.
Vielen dank für eure Hilfe!