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

Jenkins uses the System Admin e-mail address as the sender address for e-mail notification. You can configure this under Manage Jenkins -> Configure System. This is under the Jenkins Location header on that page! It is not immediately obvious that this setting is tied to the e-mail notification settings, since it is not under the E-mail notification header on the configuration page.