How can I set the Sender's address in Jenkins?

Question

I\'m sending mail from Jenkins to an anonymous SMTP relay internally. That relay then securely sends mail to exchange online via TLS on port 587. The transport works perfectly,

Answer 1

import javax.mail.Message.RecipientType
import javax.mail.Address
import javax.mail.internet.InternetAddress
import javax.mail.internet.MimeMessage

msg.setFrom(new InternetAddress("john...@server.com"))