InterNetworX | Michael Rößler writes:
Hello @ll,I have to configure courier-mta that it firstly try to encrypt with tls and when it fails then without tls like the following postfix-statement does: smtp_tls_security_level=may Is this possible with courier-mta? I am so confused by many configuration files and many things I have to consider. Config file esmtpd-ssl gives me information that the esmtpd.pem must not be world readable. At the moment esmtpd.pem is a softlink to the real certificate file which is not world-readable anymore. Is this ok?
That's fine, but a certificate is needed for receiving mail, not sending it.The default configuration of Courier will use TLS for sending automatically, if the remote mail server supports it, otherwise the mail will be sent unencrypted. I don't know what that Postfix setting does.
Is this configured in config file esmtproutes? here just contains: : /SECURITY=NONE
This disables TLS for sending completely. Remove this setting.
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