I have discovered the reason my member is unable to post (She has been posting successfully for months). Her address (now?)has two forms: From: "Jane Doe" <[log in to unmask]> Reply-To: [log in to unmask] Apparently her posts *to* the list are received as "Jane Doe" <[log in to unmask]> I subscribed her at this address which listserv accepted as a "new" address although she is already subscribed as [log in to unmask] However when the list attempted to send to "Jane Doe" <[log in to unmask]> *her* server rejects this address. Any suggestions where I go from here? Janis ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Janis Roihl Palm City, Florida, US ([log in to unmask]) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++