https://access.redhat.com/webassets/avalon/d/red_hat_jboss_enterprise_application_platform/7.3/javadocs/com/sun/mail/smtp/SMTPSenderFailedException.html
SMTPSenderFailedException (Red Hat JBoss Enterprise Application Platform 7.3.0.GA public API)
red hat jboss
https://jakarta.ee/specifications/mail/1.6/apidocs/com/sun/mail/smtp/class-use/smtpsenderfailedexception
Uses of Class com.sun.mail.smtp.SMTPSenderFailedException (Jakarta Mail API documentation)
usesclasssun