B4J Question Standalone App Not Sending Email (Sending from IDE Works)

B4XDev

Active Member
Licensed User
I have an app that allows me to send email. When I run the app via the IDE and try to send the email, it sends successfully.

When I try to send it from the Standalone version, it does not work. I get this error message:

Error Message When Attempting to Send Email from Standalone App:
javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
    at java.base/sun.security.ssl.Alert.createSSLException(Unknown Source)
    at java.base/sun.security.ssl.Alert.createSSLException(Unknown Source)
    at java.base/sun.security.ssl.TransportContext.fatal(Unknown Source)
    at java.base/sun.security.ssl.Alert$AlertConsumer.consume(Unknown Source)
    at java.base/sun.security.ssl.TransportContext.dispatch(Unknown Source)
    at java.base/sun.security.ssl.SSLTransport.decode(Unknown Source)
    at java.base/sun.security.ssl.SSLSocketImpl.decode(Unknown Source)
    at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(Unknown Source)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at b4j/org.apache.commons.net.smtp.AuthenticatingSMTPClient.performSSLNegotiation(Unknown Source)
    at b4j/org.apache.commons.net.smtp.AuthenticatingSMTPClient.execTLS(Unknown Source)
    at b4j/anywheresoftware.b4a.net.SMTPWrapper$1.run(Unknown Source)
    at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
    at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.base/java.lang.Thread.run(Unknown Source)

I'm not using obfuscation.

Anybody know what might be happening here and how to fix it?

Thank you!
 
Solution

Mariano Ismael Castro

Active Member
Licensed User
Check this

 
Upvote 1
Solution

bdunkleysmith

Active Member
Licensed User
Longtime User
Upvote 2

B4XDev

Active Member
Licensed User
Yes, that fixes my issue!

I should have known to search for that error message specifically instead of a general description of the problem. :-/

Thank you!
 
Upvote 0
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