[Mailman-Users] Tangential Delivery Question

[Thomas Hochstein]

David Hwang schrieb:

> What does "comcast.net requires valid sender domain (in reply to RCPT TO 
> command))" mean?

That comcast.net demands that incoming mail must have a valid sender
domain, which probably refers to the domain part of the mail address
of the sender of that message (what a sentence!).

What is the (envelope) sender of the message that is not accepted?

-thh