HandshakeException on send() <= API 24

[rubenferreira97]

Running flutter 3.0.1. When send() is called, on older Android APIs <= 24 a HandshakeException is throw.

HandshakeException (HandshakeException: Handshake error in client (OS Error: 
	CERTIFICATE_VERIFY_FAILED: certificate has expired(handshake.cc:393)))

Exception Line:

@pragma("vm:external-name", "SecureSocket_Handshake")
external int _handshake(SendPort replyPort);

[close2]

What happens if you enable the option: ignoreBadCertificate on an StmpServer instance?

SmtpServer gmail(String username, String password) =>
    SmtpServer('smtp.gmail.com', username: username, password: password, ignoreBadCertificate: true);