Hi, I did some debugging and found, that TLSv1 is hard-coded in MailConnection.java in v1.0.0 of Geronimo Java Mail.
I filled a JIRA [1], which contains a patch proposal. Happy to receive some feedback. Thanks in advance, Richard [1] https://issues.apache.org/jira/browse/GERONIMO-6792
smime.p7s
Description: S/MIME cryptographic signature