Re: using wrong smtp server
From: Ben Winzenz [Exchange MVP] (ben_winzenz_at_NOSPAMdotmessageonedotcom)
Date: 11/12/04
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Date: Fri, 12 Nov 2004 09:42:24 -0600
Actually, it sounds like a firewall issue. It sounds like from the DMZ,
port 25 outbound is not allowed, which would explain the connection attempts
not working, yet nslookup is returning results. If you fix the firewall
problem so the outbound port 25 is allowed from the server in the DMZ and
verify that you can initiate a connection, then you should be able to set
the DMZ server as the only bridgehead and have outbound mail flow through
it.
-- Ben Winzenz Exchange MVP "microsoft" <tconley@hooveribcs.com> wrote in message news:u0u9wvMyEHA.2192@TK2MSFTNGP14.phx.gbl... > first thing., thanks for being such a help thus far, now here are my > results: > > nslookup returns my internal network dns servers. > after changing the type and doing a lookup of yahoo, I get the responses I > would expect, but when I try to telnet to any of them I get a connect > failed. I know the addresses work though, because from my workstation > inside > the network I can telnet to them fine. Looks like I dns config issue > right? > "Ben Winzenz [Exchange MVP]" <ben_winzenz@NOSPAMdotmessageonedotcom> wrote > in message news:%23lTAWkMyEHA.1400@TK2MSFTNGP11.phx.gbl... >> If your server in the DMZ is not sending out, then it may not be > configured >> correctly to use DNS servers. How is that server set up? Is it set up >> to >> use your internal DNS servers for name resolution? What happens when you >> perform an nslookup from that server? >> >> For example, from a command prompt, type nslookup, then type set type=mx. >> run a query on a domain, such as yahoo.com. Do you get results back? If >> you do, can you telnet to one of those servers successfully? From a > command >> prompt, type telnet servername 25 (indicating you want to connect on port > 25 >> to the remote server. If it is successful, you should see a banner >> indicating the other server is ready to start. >> >> -- >> Ben Winzenz >> Exchange MVP >> >> >> "microsoft" <tconley@hooveribcs.com> wrote in message >> news:OqiGVVMyEHA.1984@TK2MSFTNGP14.phx.gbl... >> >I tried this a while back, and my mail went to the server in the dmz, >> >but >> >it >> > sat there and would not send out. It seemed to be just sitting in the >> > queue. >> > Any idea why? >> > "Ben Winzenz [Exchange MVP]" <ben_winzenz@NOSPAMdotmessageonedotcom> > wrote >> > in message news:OeIcM5DyEHA.2804@TK2MSFTNGP15.phx.gbl... >> >> Possibly, but what is more important is if the SMTP connector is also > set >> > up >> >> to forward to a smarthost, or if it is set up to use DNS, and what the >> >> Address space is configured as. I'd probably go ahead and list only > the >> >> server in the DMZ as the bridgehead. If you do that, you may notice > that >> >> you don't even need to configure the smarthost setting, as the > bridgehead >> >> will normally be the one that handles the message flow. Give it a try >> >> and >> >> see if that works, otherwise make sure that the smarthost setting is > set >> > on >> >> the connector (IP enclosed in brackets). >> >> >> >> -- >> >> Ben Winzenz >> >> Exchange MVP >> >> >> >> >> >> "microsoft" <tconley@hooveribcs.com> wrote in message >> >> news:%23F$YTVDyEHA.2804@TK2MSFTNGP15.phx.gbl... >> >> >I do have an smtp connector setup. It is using both servers for local >> >> > bridgeheads. >> >> > Is this my problem? >> >> > >> >> > "Ben Winzenz [Exchange MVP]" <ben_winzenz@NOSPAMdotmessageonedotcom> >> > wrote >> >> > in message news:Ot0X%238CyEHA.1392@tk2msftngp13.phx.gbl... >> >> >> Have you made sure that you enclosed the IP address of the Smart > Host >> > in >> >> >> brackets? [IP.IP.IP.IP] >> >> >> >> >> >> IIRC, you can either set the FQDN, or if you use the IP, you have >> >> >> to >> >> > enclose >> >> >> it in brackets. Also, do you have any SMTP connectors installed? >> >> >> SMTP >> >> >> connectors will override the settings on the SMTP Virtual Server, >> >> >> so >> >> >> if >> >> > both >> >> >> are set up to send all mail (address space of *), the SMTP >> >> >> connector >> >> >> wins. >> >> >> >> >> >> -- >> >> >> Ben Winzenz >> >> >> Exchange MVP >> >> >> >> >> >> >> >> >> "microsoft" <tconley@hooveribcs.com> wrote in message >> >> >> news:%23EFRxyCyEHA.3508@TK2MSFTNGP15.phx.gbl... >> >> >> > yes, it is part of the same org. I have never read any microsoft >> >> >> > docs >> >> >> > recommending any different. >> >> >> > The internal server is setup to send all messages to a smarthost >> > which >> >> > is >> >> >> > the ip address of the server in the dmz. >> >> >> > "Ben Winzenz [Exchange MVP]" > <ben_winzenz@NOSPAMdotmessageonedotcom> >> >> > wrote >> >> >> > in message news:u5v9LkCyEHA.4064@TK2MSFTNGP10.phx.gbl... >> >> >> >> Um - I seriously hope that the Exchange server in your DMZ isn't >> > part >> >> > of >> >> >> > the >> >> >> >> same Exchange org. Exchange doesn't belong in a DMZ - period. >> >> >> >> A >> >> > simple >> >> >> >> SMTP server - sure, but not Exchange. >> >> >> >> >> >> >> >> That aside, how do you have the internal Exchange SMTP server >> >> > configured? >> >> >> >> If they are in the same Organization, is the server in the DMZ >> >> > configured >> >> >> > as >> >> >> >> the bridgehead server in the routing group? If they are in >> >> >> >> separate >> >> >> >> orgs, >> >> >> >> have you configured your SMTP VS to send all mail to a Smart >> >> >> >> host >> > (the >> >> >> > smart >> >> >> >> host being the server in the DMZ)? >> >> >> >> >> >> >> >> -- >> >> >> >> Ben Winzenz >> >> >> >> Exchange MVP >> >> >> >> >> >> >> >> >> >> >> >> "Travis" <Travis@discussions.microsoft.com> wrote in message >> >> >> >> news:58CB3323-2151-4591-B73C-3D80034AEA26@microsoft.com... >> >> >> >> > here is my situation: >> >> >> >> > 2 exchange 2003 servers, one on local network that handles > mail, >> > and >> >> >> >> > public >> >> >> >> > folders, and one in the dmz that should only be handling > internet >> >> > mail >> >> >> >> > inbound and outbound. Inbound internet mail works just fine. >> >> >> >> > Outbound >> >> >> > mail >> >> >> >> > is >> >> >> >> > going out through the exchange 2003 server that is in my local >> >> > network >> >> >> >> > though. This works most of the time, but if anyone sends to >> >> >> >> > anyone >> >> > who >> >> >> >> > requires a reverse dns record to receive mail will not accept >> >> >> >> > mail >> >> > from >> >> >> > us >> >> >> >> > because the reverse record goes to out to the server in the > dmz. >> >> >> >> > What >> >> >> >> > do >> >> >> > I >> >> >> >> > need to do to get all outbound mail to go out through the > correct >> >> >> > server? >> >> >> >> > I >> >> >> >> > thought my smtp virtual server was configed correct, but I > guess >> >> >> >> > not. >> >> >> >> > Thanks >> >> >> >> >> >> >> >> >> >> >> > >> >> >> > >> >> >> >> >> >> >> >> > >> >> > >> >> >> >> >> > >> > >> >> > >
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