I'm checking with AT&T right now. Hopefully they'll come up with an answer.
"KL" <noname@nowhere.com> wrote in message
news:%23p4EJ%23xAHHA.4212@TK2MSFTNGP02.phx.gbl...
>
>
http://forums.openhosting.com/viewtopic.php?p=708&sid=03a058d3793cb255c73178cae11763bc >
> Seem to some weird blocking they are using. Apparently they think it's
> funny to to try and cause trouble instead of showing an error message when
> they block.
>
> Your best bet is trying to contact them and ask them about this.
>
> KL.
>
>
> "Bill H" <you@notreally.com> skrev i meddelandet
> news:RYKdnRMaovCOAczYnZ2dnUVZ_qGdnZ2d@comcast.com...
>> I've set up a Win 2K3 machine with the SMTP service running for outgoing
>> mail only. This machine serves as a development machine for .NET,
>> several databases, and software. The machine name is "asiolywadev" and
>> the fully qualified domain name "asiolywadev.mydomain.net" is defined in
>> SMTP's virtual properties. This machine resides at my location.
>>
>> We do have a valid MX record defined for our mail.mydomain.net mail sever
>> at a completely different IP address at a different location in another
>> state.
>>
>> The billing package builds an email and writes it to the
>> "\mailroot\Pickup" directory. The email includes a CC: address. All
>> seems to work fine except for some email addresses. In testing, att.net
>> wouldn't accept email and it just sits in the queue, although the email
>> was delivered to the TO: address. When I switch the addresses the att.net
>> address never gets delivered.
>>
>> A look at the event logs show:
>>
>> +-----------------------------------+
>> Message delivery to the host '12.102.240.23' failed
>> while delivering to the remote domain 'att.net' for the
>> following reason: An SMTP protocol error occured.
>> +------------------------------------+
>>
>> The header of the email, built by the dbms application, looks like:
>>
>> Received: from mail pickup service by asiolywadev.mydomain.net with
>> Microsoft SMTPSVC;
>> Wed, 8 Nov 2006 00:30:37 -0800
>> Date: Wed, 08 Nov 2006 00:30
>> From: support@mydomain.net
>> Subject: Statement from LAKEWOOD VIEW TWNHOME ASSN
>> To: myaddress@mydomain.net
>> Cc: myaddress@att.net
>> MIME-Version: 1.0
>> Content-Type: text/plain; charset="iso-8859-1"
>> Message-ID: <ASIOLYWADEVFRaqbC8w00000003@asiolywadev.mydomain.net>
>> X-OriginalArrivalTime: 08 Nov 2006 08:30:37.0156 (UTC)
>> FILETIME=[2A8C8240:01C70310]
>>
>> I ran the SMTPDiag tool and get:
>>
>> C:\Documents and Settings\me>d:\utilities\smtpdiag\smtpdiag "myaddress@my
>>
>> domain.net" "myaddress@att.net" /v
>>
>>
>>
>> Searching for Exchange external DNS settings.
>>
>> Computer name is ASIOLYWADEV.
>>
>> Failed to connect to the domain controller. Error: 8007054b
>>
>>
>>
>> Checking SOA for att.net.
>>
>> Checking external DNS servers.
>>
>> Checking internal DNS servers.
>>
>>
>>
>> Checking TCP/UDP SOA serial number using DNS server [4.2.2.2].
>>
>> TCP test succeeded.
>>
>> UDP test succeeded.
>>
>> Serial number: 143
>>
>> SOA serial number match: Passed.
>>
>>
>>
>> Checking local domain records.
>>
>> Starting TCP and UDP DNS queries for the local domain. This test will try
>> to
>>
>> validate that DNS is set up correctly for inbound mail. This test can
>> fail for
>>
>> 3 reasons.
>>
>> 1) Local domain is not set up in DNS. Inbound mail cannot be routed to
>>
>> local mailboxes.
>>
>> 2) Firewall blocks TCP/UDP DNS queries. This will not affect inbound
>> mail,
>>
>> but will affect outbound mail.
>>
>> 3) Internal DNS is unaware of external DNS settings. This is a valid
>>
>> configuration for certain topologies.
>>
>> Checking MX records using TCP: mydomain.net.
>>
>> MX: MAIL.mydomain.net (10)
>>
>> Checking MX records using UDP: mydomain.net.
>>
>> MX: MAIL.mydomain.net (10)
>>
>> Both TCP and UDP queries succeeded. Local DNS test passed.
>>
>>
>>
>> Checking remote domain records.
>>
>> Starting TCP and UDP DNS queries for the remote domain. This test will
>> try to
>>
>> validate that DNS is set up correctly for outbound mail. This test can
>> fail for
>>
>> 3 reasons.
>>
>> 1) Firewall blocks TCP/UDP queries which will block outbound mail.
>> Windows
>>
>> 2000/NT Server requires TCP DNS queries. Windows Server 2003 will use UDP
>>
>> queries first, then fall back to TCP queries.
>>
>> 2) Internal DNS does not know how to query external domains. You must
>>
>> either use an external DNS server or configure DNS server to query
>> external
>>
>> domains.
>>
>> 3) Remote domain does not exist. Failure is expected.
>>
>> Checking MX records using TCP: att.net.
>>
>> MX: gateway2.att.net (5)
>>
>> MX: gateway1.att.net (5)
>>
>> Checking MX records using UDP: att.net.
>>
>> MX: gateway1.att.net (5)
>>
>> MX: gateway2.att.net (5)
>>
>> Both TCP and UDP queries succeeded. Remote DNS test passed.
>>
>> A: gateway2.att.net [12.102.240.23]
>>
>> A: gateway1.att.net [204.127.134.23]
>>
>>
>>
>> Checking MX servers listed for myaddress@att.net.
>>
>> Connecting to gateway1.att.net [204.127.134.23] on port 25.
>>
>> Received:
>>
>> 550 unauthorized interface for 67.160.83.167 on mtiwmxc16
>>
>>
>>
>> Error: Expected "220". Server is not accepting connections.
>>
>> Failed to submit mail to gateway1.att.net.
>>
>> Connecting to gateway2.att.net [12.102.240.23] on port 25.
>>
>> Received:
>>
>> 550 unauthorized interface for 67.160.83.167 on mtiwmxc18
>>
>>
>>
>> Error: Expected "220". Server is not accepting connections.
>>
>> Failed to submit mail to gateway2.att.net.
>>
>>
>>
>>
>> So, there seems to be some kind of problem with ATT.NET accepting email
>> from our development server. I can't figure out why? Our production
>> servers, running on Linux and using sendmail from within the local
>> network where our corporate mail server resides, are able to send
>> billings with CC:s to my att.net address without problems.
>>
>> Can anyone help?
>>
>> Thanks,
>>
>> Bill
>>
>
>