Re: NDR ?
From: Verizon (MrWhipple_at_whocares.com)
Date: 04/13/04
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Date: Tue, 13 Apr 2004 17:00:27 GMT
Thanks for the info.
Actually I'm not on Verizon DSL, I'm on a Verio T1. I have a Verizon account
and use their news server.
Here is the situation:
99% of our e-mail works fine. The 1% that doesn't work always gets one of
the messages below.
I tried the Telnet test and got different responses.
533 sorry, that domain isn't in my list of allowed rcpthosts <#5.7.1>
Connection Failed
Relaying denied. IP name possibly forged
Our mail is setup like this:
We have a Barracuda networks SPAM firewall with a public address of
204.245.188.9 = mail.emilyslist.org.
The actual mail server is running Exchange 5.5 and has an address of
204.245.188.3 = hera.emilyslist.org.
Everything sits behind a SonicWall Pro 230 firewall.
I went to www.dnsreport.com and everything passed.
Any help you could give would be greatly appreciated.
"Allen Clark" <acent1@erols.com> wrote in message
news:eTNXBfOIEHA.3968@TK2MSFTNGP12.phx.gbl...
> Actually...
>
> I have just gone through an issue with Verizon. Verizon states that they
> "do not provide pointer records for DSL customers." This was from the
> manager of the DSL support group and it is a policy of Verizon. I
strongly
> recommend that you dump Verizon as your DSL carrier, and get one that will
> actually service you as a business customer.
>
> The reason you get this message is because the remote mail server is
trying
> to use Reverse DNS to verify that you are who you are. But without a PTR
> record for the reverse DNS lookup, their server cannot verify who your
> server is. This is a major flaw in the way Verizon treats their business
> DSL customers.
>
> See if there are enough complaints to start a class action lawsuit against
> them. The only problem with a Class Action lawsuit is that only the
lawyers
> make out like bandits and everyone else gets screwed.
>
> Good Luck!
>
>
> "Kirill S. Palagin" <kpalagin@nomail.phxint.please.ru> wrote in message
> news:eg2GTcNIEHA.3848@tk2msftngp13.phx.gbl...
> > For some reason other mail servers do not like you. Your IP is ether
> > listed as spamming, does not have A and PTR records, or PTR record is
> > something like xxx-yyy-zzz-vvvv-dsl.isp.com. From keyboard of your
> > Exchange machine perform this testing
> > http://support.microsoft.com/default.aspx?scid=kb;en-us;153119
> > against other mail servers.
> >
> > Verizon wrote:
> >
> > > I get one of the following messages whenever I try to send messages to
> > > certain recipients:
> > >
> > >
> > >
> > > The following recipient(s) could not be reached:
> > > 'betsy@xyz.com' on 4/12/04 9:39 AM
> > > The recipient name is not recognized
> > > The MTS-ID of the original message is:
> > > c=US;a=PRIMARY;p=ELLIST;l=HERAD-040412133844Z-433
> > > -------------------------------------------------
> > > The following recipient(s) could not be reached:
> > > 'adam@abc.com' on 3/25/2004 1:53 PM
> > > Unable to deliver the message due to a communications failure
> > > The MTS-ID of the original message is:
> > > c=US;a=PRIMARY;p=ELLIST;l=HERAD-040325185233Z-4797
> > >
> > > I can send messages to this address from outside the office but not
> inside.
> > > We have about 70 different address that we get this same reply from,
and
> > > when I did an nslookup the only simularity i could find was the mail
> server
> > > was not the same domain as the e-mail address (i.e betsy@xyz.com
returns
> a
> > > MX record of registeredserver.com).
> > > Any ideas?
> > >
> > > Thanks,
> > > rkeating@emilyslist.org
> > >
> > >
>
>
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