Re: Outgoing SMTP not working

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From: hlk (kunkel_at_frontiernet.net)
Date: 06/14/04 

Date: Sun, 13 Jun 2004 22:33:20 -0400

Got it working!

Turns out my ISP has tightened up the mail servers on their end.

To test SBS2003 before deploying on customer premises I installed a second
SBS2003 for my own domain.

Both external NIC's are on the same subnet.

To satisfy name resolution needs I added reciprocal entries in each server's
hosts file. i.e.
Domain1 hosts file contains entries for Domain2 and Domain2 hosts file
contains entries for Domain1.

With this arrangement I can access each SBS server from the other SBS
server. (RWW/OWA).

I can send and receive mail from each other via SMTP.

Thanks to all for the helpful advice.

Howie

"Marina Roos [SBS-MVP]" <marina@roos.nodontwantspam.nl.com> wrote in message
news:ureWJpHTEHA.3580@TK2MSFTNGP09.phx.gbl...
> Did you run the CEICW wizard?
>
> --
> Regards,
>
> Marina
> Microsoft SBS-MVP
>
> "Howard Kunkel" <kunkel@frontiernet.net> schreef in bericht
> news:83B62174-D4D2-4689-9AA9-02C69B753746@microsoft.com...
> > I am prestaging an SBS2003 server in preparation for migration from
> existing SBS2000.
> >
> > I need to confirm SMTP operation.
> >
> > My test environment includes ADSL to 4 port switch. I am able to pull 3
IP
> addresses. The DHCP renewal rate is such that the addresses may as well be
> static ( no changes in months).
> >
> > The switch connects to three routers, each getting a WAN DHCP address.
> >
> > To one of these routers I connected my prestage SBS2003. I used the NAT
> function of the router to create an IP subnet the same as my client
(static
> IP same as existing SBS2000). I placed the SBS2003 server in the DMZ on
the
> NAT router.
> >
> > On a host on another network created from another NAT router I edited
the
> hosts file to resolve host names for the SBS2003 server to the WAN address
> of the first router. The WAN ports on these routers are in parallel
> connected to the 4 port switch connceted to the ADSL so each router has
it's
> own internet address.
> >
> > I am able to connect from the remote host to the SBS2003 server via RWW
> and OWA and hit the web page, which is on a separate server routed through
> ISA on the SBS box.
> >
> > I am able to send mail to the SMTP server on SBS but not able to send
mail
> from it.
> >
> > I get the following message from all remote domains I try to send to:
The
> remote server did not respond to a connection attempt.
> >
> > I can telnet on port 25 to the target domains.
> >
> > I'm thinking SMTP relay or reverse DNS issue.
> >
> > My next step is to create another mail server with different domain name
> but direct connection between the two to test SMTP connection. Again use
the
> hosts file for name resolution.
> >
> > Any suggestions or ideas appreciated.
> >
> > Howard
> > MCSE, A+, Network+
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > With this method I am able to get from one Internet address to the
>
>

"hlk" <kunkel@frontiernet.net> wrote in message
news:uxGuMYbUEHA.704@TK2MSFTNGP09.phx.gbl...
> Got it working!
>
> Turns out my ISP has tightened up the mail servers on their end.
>
> To test SBS2003 before deploying on customer premises I installed a second
> SBS2003 for my own domain.
>
> Both external domains are on the same subnet.
>
> To satisfy I added reciprocal entries in each server's hosts file. i.e.
> Domain1 hosts file contains entries for Domain2 and Domain2 hosts file
> contains entries for Domain1.
>
> With this arrangement I can access each SBS server from the other SBS
> server. (RWW/OWA).
>
> I can send and receive mail from each other via SMTP.
>
> Thanks to all for the helpful advice.
>
> Howie
>
>
> "Marina Roos [SBS-MVP]" <marina@roos.nodontwantspam.nl.com> wrote in
message
> news:ureWJpHTEHA.3580@TK2MSFTNGP09.phx.gbl...
> > Did you run the CEICW wizard?
> >
> > --
> > Regards,
> >
> > Marina
> > Microsoft SBS-MVP
> >
> > "Howard Kunkel" <kunkel@frontiernet.net> schreef in bericht
> > news:83B62174-D4D2-4689-9AA9-02C69B753746@microsoft.com...
> > > I am prestaging an SBS2003 server in preparation for migration from
> > existing SBS2000.
> > >
> > > I need to confirm SMTP operation.
> > >
> > > My test environment includes ADSL to 4 port switch. I am able to pull
3
> IP
> > addresses. The DHCP renewal rate is such that the addresses may as well
be
> > static ( no changes in months).
> > >
> > > The switch connects to three routers, each getting a WAN DHCP address.
> > >
> > > To one of these routers I connected my prestage SBS2003. I used the
NAT
> > function of the router to create an IP subnet the same as my client
> (static
> > IP same as existing SBS2000). I placed the SBS2003 server in the DMZ on
> the
> > NAT router.
> > >
> > > On a host on another network created from another NAT router I edited
> the
> > hosts file to resolve host names for the SBS2003 server to the WAN
address
> > of the first router. The WAN ports on these routers are in parallel
> > connected to the 4 port switch connceted to the ADSL so each router has
> it's
> > own internet address.
> > >
> > > I am able to connect from the remote host to the SBS2003 server via
RWW
> > and OWA and hit the web page, which is on a separate server routed
through
> > ISA on the SBS box.
> > >
> > > I am able to send mail to the SMTP server on SBS but not able to send
> mail
> > from it.
> > >
> > > I get the following message from all remote domains I try to send to:
> The
> > remote server did not respond to a connection attempt.
> > >
> > > I can telnet on port 25 to the target domains.
> > >
> > > I'm thinking SMTP relay or reverse DNS issue.
> > >
> > > My next step is to create another mail server with different domain
name
> > but direct connection between the two to test SMTP connection. Again use
> the
> > hosts file for name resolution.
> > >
> > > Any suggestions or ideas appreciated.
> > >
> > > Howard
> > > MCSE, A+, Network+
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > With this method I am able to get from one Internet address to the
> >
> >
>
>

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