Re: Inbound SMTP Publishing

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From: Sergio Fonseca [MVP] (fonsecase_at_iol.pt)
Date: 03/14/05 

Date: Mon, 14 Mar 2005 21:30:00 -0000

Hi Jeff,

Thank you for the feed-back :-)

Qualquer sugestão deve ser testada antes de aplicada - www.gupade.org

"Jeff Wikle" <JeffWikle@discussions.microsoft.com> wrote in message
news:DB46A9CF-C3E7-4AF3-BB8D-F74CB7A0ECD3@microsoft.com...
> I wasn't receiving any errors, which was my problem. Here's what I finally
> figured out: I was dialing up on my laptop so I could get outside the
> network. After hearing about some of the ISPs blocking port 25 to thwart
> virus spreading, I finally checked with my dial-up ISP and, sure enough,
they
> were blocking outbound port 25. This explained why my ISA server never
logged
> any connection attempts when I tried to telnet to it and also why ISA
never
> logged any port scans on port 25. I hopped onto another dialup account
that
> the ISP WASN'T blocking outbound 25 and everything worked perfectly.
>
> Thank you for your response.
>
> Jeff
>
>
>
> "Sergio Fonseca [MVP]" wrote:
>
> > Hi Jeff,
> >
> > What error messages you receive when you try?
> >
> >
> > Qualquer sugestão deve ser testada antes de aplicada - www.gupade.org
> >
> > "Jeff Wikle" <Jeff Wikle@discussions.microsoft.com> wrote in message
> > news:FA5E61CF-B380-4BBD-8E1A-70E80512BAFE@microsoft.com...
> > > Running ISA 2004 trying to publish Exchange 2003 running on a diff't
> > server.
> > > I have OWA over SSL working. I'm publishing another web server on port
80.
> > I
> > > have L2TP VPN working. My problem is getting the ISA to listen on port
25
> > for
> > > incoming SMTP. I've used the wizards, tried it manually, each time
> > deleting
> > > the non-working rule before creating another. I run a port scan on the
> > > external interface of the ISA and it shows just the ports I want open,
> > EXCEPT
> > > 25. I show nothing in Alerts. Outbound browsing works fine. When I run
a
> > port
> > > scan, ISA logging will pick it up as Intrusion (good thing), but when
I
> > try
> > > to telnet to port 25, ISA doesn't even show that it's being denied. It
> > > doesn't log anything.
> > >
> > > My firewall policy looks like this:
> > >
> > > Incoming SMTP - Allow - SMTP Server - From External - To Internal
Exchange
> > IP
> > >
> > > I've read every paper, KB article, walkthrough, etc I can find and it
> > seems
> > > so easy. Any ideas why my ISA won't listen on port 25 would be greatly
> > > appreciated.
> > >
> > > Jeff Wikle, MCP
> >
> >
> >

Relevant Pages

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