IPWorks OpenPGP 2020 macOS Edition

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SSLStartMode Property

Determines how the component starts the SSL negotiation.


public var sslStartMode: PsmtpSSLStartModes {
get {...}
set {...} }

public enum PsmtpSSLStartModes: Int32 { case sslAutomatic = 0 case sslImplicit = 1 case sslExplicit = 2 case sslNone = 3 }

Default Value



The SSLStartMode property may have one of the following values:

0 (sslAutomatic)If the remote port is set to the standard plaintext port of the protocol (where applicable), the class will behave the same as if SSLStartMode is set to sslExplicit. In all other cases, SSL negotiation will be implicit (sslImplicit).
1 (sslImplicit)The SSL negotiation will start immediately after the connection is established.
2 (sslExplicit)The class will first connect in plaintext, and then explicitly start SSL negotiation through a protocol command such as STARTTLS.
3 (sslNone - default)No SSL negotiation, no SSL security. All communication will be in plaintext mode.

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IPWorks OpenPGP 2020 macOS Edition - Version 20.0 [Build 7941]