On Thu, 17 Aug 2006 15:52:43 -0400, Jeff Kiesel <[log in to unmask]> wrote: >Outlook's autoresponder doesn't pay any attention to the Reply-To header. >It responds to the From header. So any OOO sent from an Outlook client, >will never be sent to listserv, but right to the poster. Correct. >A different email client may have an autoresponder that uses the Reply-To >header. In this case the OOO will be sent to ListServ, and this is why we >need to provide for OOO messages in CONTENT_FILTER. Yes. There is also a Sender: address in the mail headers which for LISTSERV list messages is set by default to the List-Address (listname@servername). Some OOO responders will send to this address. So that's 2 ways an OOO message might be sent to the List (instead of the From:) and you are right to have a CONTENT_FILTER ready to intercept that. >Am I understanding this correctly? Seems so. :-)