Hi, I'm facing a problem. I need to test what happens when a list contains an email-address that does not exist (anymore). We use an external mailserver to deliver posted messages, and I can see in the log of this server that it tries to post the testmessage to the bogus email adress I added to the list. Then, the mailserver tries to send an error report to owner- <listname>@<listserver domain name>. This is the value of the "Return-path" entry in the mail header. This email adress does not exist, and the message cannot be delivered. It remains in the outbox folder of the mailserver. How can I let the mailserver send its error report to the list owner? Regards, Jakko Vos