I will follow up on the logs if they are avaiable and try Earthlink.net
again. Maybe I will actually get someone who will help.
Nate
> ----------
> From: Andy David
> Reply To: [EMAIL PROTECTED]
> Sent: Friday, August 31, 2001 10:33
> To: [EMAIL PROTECTED]
> Subject: RE: IMC problem with Earthlink.net
>
> Well, without sending you on a wild goose chase, I still would focus on
> Earthlink's ability to look you up correctly :)
> Its too bad you can't get a hold of someone there.
>
> As to 5) You can resolve it correctly, but can Earthlink resolve the
> mailserver correctly from the DNS servers responsible for this domain is
> one
> question.
>
> Also, you mentioned before that message tracking didn't reveal much. I
> would
> be curious as to what the SMTP logs have in them whenever you try to send
> an
> email to Earthlink.
>
> There maybe some other things to look at that someone else here may pick
> up
> on as well...
>
>
>
>
>
> Andy David
> J Muller International
>
>
>
>
> -----Original Message-----
> From: Couch, Nate [mailto:[EMAIL PROTECTED]]
> Sent: Friday, August 31, 2001 10:44 AM
> To: Exchange Discussions
> Subject: RE: IMC problem with Earthlink.net
>
>
> 1) We need the SMTP relay feature for POP access. (All users authenticate
> at the firewall from what I am told).
> 2) Exchange uses the external DNS servers for resolution.
> 3) All allowed domains are setup on the Exchange server as <inbound>.
> 4) We do put blocks on any addresses we find.
> 5) I have checked the reverse lookup and that does resolve correctly to
> the
> firewall IP.
>
> However, it still does not explain why our ISP CAN send email from the
> firewall to earthlink.net. If they had a spam block on us then wouldn't
> that be blocked as well?
>
> Not sure what else I can do.
>
> Nate
>
> > ----------
> > From: Andy David
> > Reply To: [EMAIL PROTECTED]
> > Sent: Friday, August 31, 2001 08:41
> > To: [EMAIL PROTECTED]
> > Subject: RE: IMC problem with Earthlink.net
> >
> > So the Firewall is relaying the mail?
> > In previous Checkpoint versions (<4.x), the SMTP Server was pretty
> buggy.
> > Daniel's idea that earthlink's servers may be doing a reverse lookup on
> > the
> > ext ip address of your firewall and its being treated as SPAM sounds
> like
> > a
> > good place to start looking.
> >
> >
> > Andy David
> > J Muller International
> >
> >
> >
> >
> > -----Original Message-----
> > From: Couch, Nate [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, August 31, 2001 9:29 AM
> > To: Exchange Discussions
> > Subject: RE: IMC problem with Earthlink.net
> >
> >
> > Andy,
> >
> > Here is what my firewall admin tells me. Sorry for the delay but we had
> > problems hooking up the past few days.
> >
> > 1) Trust SMTP Out rule - Any source SMTP (the MS Exchange server in this
> > case) can send to the external IP address on the firewall, which would
> > then
> > send it on to the destination (earthlink.net in this case).
> >
> > 2) Trust SMTP In rule - Any source from the internet can send SMTP
> > requests
> > inbound to IP address on the firewall.
> >
> > Regards.
> >
> > Nate
> >
> > > ----------
> > > From: Andy David
> > > Reply To: [EMAIL PROTECTED]
> > > Sent: Wednesday, August 29, 2001 13:32
> > > To: [EMAIL PROTECTED]
> > > Subject: RE: IMC problem with Earthlink.net
> > >
> > > Yes, but what are the rules specifically? Your statement seems to
> imply
> > > that
> > > your firewall has something unusual setup.
> > >
> > >
> > >
> > > Andy David
> > > J Muller International
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Couch, Nate [mailto:[EMAIL PROTECTED]]
> > > Sent: Wednesday, August 29, 2001 2:13 PM
> > > To: Exchange Discussions
> > > Subject: RE: IMC problem with Earthlink.net
> > >
> > >
> > > I call them "rules", but this may be a misnomer. They are
> configuration
> > > settings on the firewall which an admin can use to filter traffic to
> and
> > > from the Internet.
> > >
> > > Nate
> > >
> > > > ----------
> > > > From: Andy David
> > > > Reply To: [EMAIL PROTECTED]
> > > > Sent: Wednesday, August 29, 2001 12:41
> > > > To: [EMAIL PROTECTED]
> > > > Subject: RE: IMC problem with Earthlink.net
> > > >
> > > > Nate, what are the rules you are referring to?
> > > >
> > > > 2) Based on the rules we have setup on the firewall the messages for
> > > > Earthlink are leaving the firewall destined most often for
> > > > mx00.earthlink.net.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Andy David
> > > > J Muller International
> > > >
> > > >
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: Couch, Nate [mailto:[EMAIL PROTECTED]]
> > > > Sent: Wednesday, August 29, 2001 1:30 PM
> > > > To: Exchange Discussions
> > > > Subject: RE: IMC problem with Earthlink.net
> > > >
> > > >
> > > > Michele,
> > > >
> > > > We have a Checkpoint firewall on our side.
> > > >
> > > > I did try contacting Earthlink and after dealing with them for a
> while
> > I
> > > > felt like I had passed through a gauntlet of "no help". Very
> > > > frustrating.
> > > >
> > > > Nate
> > > >
> > > > -----Original Message-----
> > > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> > > > Sent: Wednesday, August 29, 2001 12:14 PM
> > > > To: Exchange Discussions
> > > > Subject: RE: IMC problem with Earthlink.net
> > > >
> > > >
> > > > what kind of firewall? PIX?
> > > >
> > > > UUNet is known as a spam haven, so it's possible that this server is
> > > > blocking all traffic from them. You could always use the telephone
> to
> > > > call
> > > > the admin of that box & find out.
> > > >
> > > > -Mich�le
> > > > Immigration site: <http://LadySun1969.tripod.com>
> > > > Our new 2001 Miata: <http://members.cardomain.com/bpituley>
> > > > Tiggercam: <http://www.tiggercam.co.uk>
> > > > ---------------------------------------------------------
> > > > 99 percent of lawyers give the rest a bad name.
> > > > ---------------------------------------------------------
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: Couch, Nate [mailto:[EMAIL PROTECTED]]
> > > > Sent: Wednesday, August 29, 2001 1:05 PM
> > > > To: Exchange Discussions
> > > > Subject: IMC problem with Earthlink.net
> > > >
> > > >
> > > > Scenario:
> > > >
> > > > MS Exchange 5.5. SP4
> > > > MS Exchange/Outlook 98 for the clients.
> > > > IMC through UU.NET
> > > >
> > > >
> > > > Here is what I am encountering:
> > > >
> > > > 1) IMC functions fine for just about everyone we send to EXCEPT
> > > > Earthlink.net
> > > >
> > > > 2) Based on the rules we have setup on the firewall the messages for
> > > > Earthlink are leaving the firewall destined most often for
> > > > mx00.earthlink.net.
> > > >
> > > > 3) When we send to earthlink.net addresses we get:
> > > >
> > > > "Unable to deliver the message due to a communications
> error"
> > > >
> > > > 4) Our ISP engineer and they can send email to earthlink from the
> > > firewall
> > > > as a company.com address so they tell me. However, anyone from
> inside
> > > the
> > > > firewall sending to earthlink.com gets kicked back with the above
> > error
> > > > code.
> > > >
> > > > 5) It seems that something on the earthlink.net side does not like
> > > > whatever
> > > > MS Exchange is doing to the outbound messages. Inbound works fine
> so
> > > far.
> > > > Headers reveal that earthlink.net is using:
> > > >
> > > > 220 eagle EL_3_4_2 /EL_3_4_1 ESMTP EarthLink SMTP Server
> > > >
> > > > 6) I have checked the IMC and found no filters nor any weird
> > > configuration
> > > > (I haven't changed anything on the setup for the IMC in months and
> > this
> > > > whole thing started up about four weeks ago.
> > > >
> > > > 7) I haven't found anything in the archives, FAQ, or Technet for the
> > > above
> > > > error code (at least nothing helpful). I am not seeing anything
> > strange
> > > > in
> > > > the Event logs (not sure if I really would, but checked anyway just
> to
> > > be
> > > > sure).
> > > >
> > > > 8) Message Tracking doesn't reveal much information as to why the
> > > message
> > > > is
> > > > not being delivered.
> > > >
> > > > 9) Earthlink.net Tech Support hasn't been much help to date.
> > > >
> > > > Anyone have any ideas as to what could be causing this? My feeling
> is
> > > > that
> > > > either company.com is being blocked due to spam being sent from us
> (I
> > > > checked UXN Spam Combat and did not find our domain listed, but did
> > find
> > > > UU.NET listed). Or, more likely the MS Exchange IMC and
> earthlink.net
> > > are
> > > > not talking the same language.
> > > >
> > > > Regards.
> > > >
> > > > Nate Couch
> > > > EDS Messaging
> > > >
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