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Alert Publisher and SMTPS TLSv1.2

Alert Publisher and SMTPS TLSv1.2


Hello everyone,


I have recently tested disabling old TLS protocols in order to try and force the usage of TLSv1.2 in encrypted communications. As per the knowledge base, the procedure involves changing a few settings, one of which, is the jdk.tls.disabledAlgorithms property in the file.


When disabling TLSv1, the Alert Publisher fails to send e-mails to the configured mail server and the following message can be seen in the logs:



Caused by: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
	at com.sun.mail.util.SocketFetcher.configureSSLSocket(
	at com.sun.mail.util.SocketFetcher.getSocket(
	at com.sun.mail.smtp.SMTPTransport.openServer(
	... 34 more

I successfuly connected to the Mail Server with openssl s_client tls1_2. Is this a valid test in this context?


I have also tried setting the -Djdk.tls.client.protocols=TLSv1.2 in the Java Configuration Options to no avail. 


This is occuring in CM 5.15.1. 


Is this expected behaviour from Alert Publisher?


Best regards,
Gil Pinheiro.