You have to tell Exchange to relay mail for your listserv machine. From memory: Go into Exchange Administrator. Go to the properties for your Internet Mail Service. Click on the routing tab. Choose "reroute mail for incoming SMTP" or something to that effect (there are two radio buttons - choose the bottom one). Add the full name of your listserv box (mine is listserv.fairhousing.com) and choose "relay." That way Exchange doesn't think listserv is just another recipient on the server. Tracey At 04:12 PM 11/28/2001 -0500, you wrote: >I have recently installed Listserv 1.8d and LSMTP. I have a MS Exchange >5.5 server on my network. When I try to send a test message to my listserv >server I get the following error: > >Your message did not reach some or all of the intended recipients. > > Subject: help > Sent: 11/28/2001 4:06 PM > >The following recipient(s) could not be reached: > > [log in to unmask] on 11/28/2001 4:06 PM > The recipient name is not recognized > The MTS-ID of the original message is: c=US;a= ;p=MTPC;l=MAIL1- >011128210556Z-13414 > MSEXCH:IMS:MTPC:WBRO:MAIL1 3551 (000B09AA) 551 Message relaying >to this domain disabled