Re: Some emails not reaching our server

From: Nicholas Basile\(MSFT\) (nicbas_at_online.microsoft.com)
Date: 04/09/04 

Date: Fri, 9 Apr 2004 07:31:19 -0400

If it is not reaching your server, you need to ask more questions of your
ISP. Have they implemented Reverse DNS lookups in an attempt to cut down on
SPAM?
Do you have anything sitting in front of Exchange like a firewall? 

-- 
Nicholas Basile(MSFT)
nicbas@online.microsoft.com
Microsoft PSS
Please do not send email directly to this alias is for newsgroup purposes
only!.
This posting is provided "AS IS" with no warranties, and confers no rights.
"Davem" <davem @ betawarriors> wrote in message
news:u%23PUiabHEHA.2668@TK2MSFTNGP10.phx.gbl...
> Hello All,
>
> Before you ask I have one more item to tell you about:
>
> I ran a test to see if the message ever reached our server and for some
> reason was blocked.  I had a customer send me an email from the account
that
> could not reach us then I had them send a message from their hotmail
> account.  The log on the server only showed the email from the hotmail
> account.
>
> Just thought I'd add this before anyone asks if I have check this.
>
> Thanks,
> Davem
>
> "Davem" <davem @ betawarriors> wrote in message
> news:uzYMQVbHEHA.1048@TK2MSFTNGP12.phx.gbl...
> > Hello All,
> >
> > I have an issue that seems to have stumped everyone I have tried to
> > explain it to.
> >
> > We have a SBS2000 server running exchange for our mail server.  For the
> > most part the server works fine.  All the users can send and recieve
mail
> > with no problems.
> >
> > The problem is we have about 8-10 customers (that we know of) who can
send
> > an email, to any address here, and it just disappears.  It does not
bounce
> > back and it never reaches our server.
> >
> > Here is what I have done to test this issue:
> >
> > 1) first I ran a bunch of tracert's from a number of different servers.
I
> > have found for the most part the tracert's reach us.  But I have also
> > found 6 servers that never reach us and they all stop on the same hop.
I
> > think this is a clue but most people don't.
> >
> > 2) Working with my ISP we have found one of thier servers that they can
> > send mail with that does not reach us and it does not bounce back.  DNS
> > lookups from that server come back with the correct DNS information.
> > Tracert does not reach us.  BUT they can telnet to our server from
theirs.
> >
> > 3) I have changed IP addresses for our server hoping that if it was a
bad
> > hop it would be rerouted.  This did not fix it.
> >
> > I am at whits-end over this.  We have been trying to resolve this for a
> > few months now and no luck.
> >
> > Has anyone seen this issue before?  Any ideas and what to try next?
> >
> > Thanks,
> > Davem
> > Gig Harbor, WA
> >
>
>

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