Direct MAPI will not work. I have not tested whether or not it just fails, or if it is smart enough to try and redirect the client to their back-end server. :) The RPC over HTTP does work, so if you are wedded to Outlook connecting to your front-end server via the Internet, you'll need to dig in and troubleshoot RPC over HTTP (hopefully https, but that's just adding an SSL cert to the virtual directory). If we can help with the RPC over HTTP, let us know. James _____________________________________________ From: fgiroux@xxxxxxxxxx [mailto:exchangelist@xxxxxxxxxxxxx] Sent: Sunday, February 26, 2006 12:46 AM To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx> Subject: [exchangelist] RE: Outlook connection with MAPI to front-end server http://www.MSExchange.org/ James replied... Unless your front-end server is an RPC over HTTP proxy, it won't work, because you don't have any mailboxes there, right? Correct! No mailboxes. But I was under the impression we could connect with regular MAPI on the front-end servers. Anyway, I originally tried using RPC over HTTP without more luck. That is what lead me to try direct MAPI. Thanks! Fred _____________________________________________ From: fgiroux@xxxxxxxxxx [mailto:exchangelist@xxxxxxxxxxxxx] Sent: Saturday, February 25, 2006 7:41 PM To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx> Subject: [exchangelist] Outlook connection with MAPI to front-end server http://www.MSExchange.org/ Hi! I am having a problem connecting with Outlook (MAPI) to front-end servers. It can not resolve the username. There is no firewall between the front-end and back-end servers (the front-end servers are used for load balancing). I can connect to the front-end servers using POP or OWA no problem. Just does not work with MAPI. I have not done any registry changes regarding ports since there is no firewall. Maybe I am in error and I must configure the registry to map the ports? The back-end server IS NOT a DC. Any insight would be very appreciated :-) Fred _____________________________________ Frederic Giroux, technical director Niveau3 Inc. IT consultants fgiroux@xxxxxxxxxx www.niveau3.ca 514-352-4782 (ext. 223) 514-352-9126 (fax) 866-477-4782 (toll free) ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: lillyj@xxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: exchange_list@xxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: lillyj@xxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx