Bob, We run Listserv along side of Exchange 2000. We do not process the outgoing mail through Exchange SMTP; we use Listserv's LSMTP product, which they no longer sell. The idea at the time we purchased it was to not burden our Exchange system with the extra mail processing, but there really is no reason we couldn't use Exchange. Our system could handle the load easily, but our Messaging group would prefer to leave things as they are. As long as your Exchange system can handle the load from Listserv, there is no reason I can think of not to use it. We integrate our lists with Exchange so that each list has an @hms.harvard.edu address in addition to a @listserv.med.harvard.edu address. This way the lists are visible in the GAL. We create a contact with the Listserv address, and then create a universal distribution group with the contact as the sole member. We hide the contact from the GAL, but not the distribution group. This has the additional effect of allowing most mail coming into the list to be run through our Exchange server's anti-virus (Antigen) and anti-spam (Brightmail) systems. We run the Listserv-supplied F-Secure AV on the Listserv server as well. I hope this answers your question. Melissa Kenny IIS Administrator Harvard Medical School IT 107 Avenue Louis Pasteur Center for Educational Technology Boston, MA 02115 -----Original Message----- From: LISTSERV site administrators' forum [mailto:[log in to unmask]] On Behalf Of Bob Moffitt Sent: Tuesday, September 19, 2006 12:53 PM To: [log in to unmask] Subject: [LSTSRV-L] Configuring Listserv to work with Exchange2003 Hi All, I'm new to this Listserv. I had planned on installing this in our environment. We have an Exchange2003 server. I am reading that I can set up a SMTP server separately to handle the incoming/outgoing mail. I'm a little confused on if it would be better for me to setup the SMTP or configure Listserv to tie in with our Exchange server. I have a good idea on the SMTP end, but I have no documentation on how to configure Listserv to work with Exchange2003. I would appreciate any feedback. Thanks, Bob Moffitt Network Administrator Brooks School North Andover, MA. 01845