The draft-RFC says that you "must" require SMTP auth for port 587. Most of my clients want a single set up. They don't want to have to change anything, regardless of whether they are home, timbuktoo, or china too. ________________________________ From: Carl Houseman [mailto:c.houseman@xxxxxxxxx] Sent: Thursday, September 15, 2005 8:17 PM To: [ExchangeList] Subject: [exchangelist] RE: Authenticated Outgoing Mail http://www.MSExchange.org/ Why should it be necessary to have different authentication requirements for the different ports? Just set up on VS to listen on 25 and 587 and require authentication for relaying purposes. I would guess he's already requiring authentication to relay for his clients that can still come in on 25. A better question is, "Why bother using the Exchange server? Just use the ISP's mail server for outbound SMTP". (One possible response is "ISP limits message size or volume" but if not that, then what?) ________________________________ From: Michael B. Smith [mailto:michael@xxxxxxxxxx] Sent: Thursday, September 15, 2005 7:58 PM To: [ExchangeList] Subject: [exchangelist] RE: Authenticated Outgoing Mail http://www.MSExchange.org/ How do you set one to require authentication and the other "not to"? :-) ________________________________ From: Carl Houseman [mailto:c.houseman@xxxxxxxxx] Sent: Thursday, September 15, 2005 7:54 PM To: [ExchangeList] Subject: [exchangelist] RE: Authenticated Outgoing Mail http://www.MSExchange.org/ Huh? At least, in Exchange 2003: Default SMTP Virtual Server Properties Advanced "Configure multiple identities for this Virtual Server" Mine shows IP Address TCP Port 192.168.0.10 2525 192.168.0.10 25 Two ports, one IP address, one VS. ________________________________ From: Michael B. Smith [mailto:michael@xxxxxxxxxx] Sent: Thursday, September 15, 2005 7:43 PM To: [ExchangeList] Subject: [exchangelist] RE: Authenticated Outgoing Mail Yes, but each SMTP VS can only listen on a single port. So you'd probably want to add an additional SMTP VS. ________________________________ From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx] Sent: Thursday, September 15, 2005 6:09 PM To: [ExchangeList] Subject: [exchangelist] RE: Authenticated Outgoing Mail http://www.MSExchange.org/ I am not sure if Exchange can be configured to listen on 587 in addition to 25, but it is accepting inbound authenticated connections is what you meant. A work around (as long as your Exchange server is properly configured) is to add an inbound rule to your firewall (you are running a firewall aren't you) to redirect incoming port 587 traffic on the external interface to port 25 on the internal destination. John T eServices For You -----Original Message----- From: EIS Lists [mailto:eis_lists@xxxxxxxxxxxxx] Sent: Thursday, September 15, 2005 2:54 PM To: [ExchangeList] Subject: [exchangelist] Authenticated Outgoing Mail http://www.MSExchange.org/ Hello: We have several users who access their Exchange accounts via POP and SMTP. Recently, several large ISPs have started blocking outbound traffic that does not use their servers. Is there a way to tell Exchange 2000 to use authenticated outbound connections (e.g., over port 587)? Thanks. ------------------------------------------------------ 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: michael@xxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to listadmin@xxxxxxxxxxxxxx