mail not working to one domain, fine to all others - Microsoft Exchange

Its a problem their end, they dont have any MX records:
http://www.dnsreport.com/tools/dnsre...g.sytexinc.com

--
Mark Fugatt
Microsoft Exchange MVP
www.exchangetrainer.com
www.msexchange.org

"christopher willis" <cwillis@icrcsolutions.com> wrote in message
news:019501c36acb$4a4cd340$a001280a@phx.gbl...
> Details:
>
>
> - Exchange2000 server on Win2k server SP3
> - Email server is working, has been for 5 months now.
> - All email is comming in fine
> - All email is going out fine unless sent to
> user@tmsg.sytexinc.com
> if sent to user@tmsg.sytexinc.com mail stays in queue,
> smtp logs stay empty, event logs stay empty.
>
> I can send mail to the user from my personal account
> hosted on an isp so I know the address is good.
>
> I have configured my smtp to use external DNS servers
> (and tried using without the external dns servers
> configured, just using forwarders on internal dns)
>
> A delay report is generated, then 48 hours later an NDR
> is generated.
>
> All mail from the tmsg.sytexinc.com domain is recieved
> just fine
>
> No MX record exists for tmsg.sytexinc.com (on any
> internet DNS server I could find), however the host
> record points to the firewall this company is using that
> is passing mail back to the email server(raptor firewall).
>
> So the question remains....why will exchange not connect
> and send mail to this domain? Any help would be greatly
> appreciated as I am at my wits end. I have contacted the
> tech and he verifys his clients are recieving mail, and
> he is not blocking anonymous traffic from my IP.
>
> I have also established a telnet connection with
> tmsg.sytexinc.com on port 25 and sucessfully sent email
> to this user by manually going through the smtp commands
> from Helo to quit....
>
> I posted in the smtp forum but this one seems more active.
>

First, thanks for taking the time to respond, however, I
can send mail from my isp (itdude.net), which is how I
have been communicating with the admin from sytexinc.com,
so I know mail servers are sending to this domain even
without an MX record.

I can telnet into port 25 on tmsg.sytexinc.com from home
and send mail using IMC commands, however I cannot telnet
in from work. Since I can telnet to other mail servers
on port 25 I know my firewall is not blocking me, leading
me to believe either the ISP or the the company is
blocking traffic from my domain. Sound correct?


>-----Original Message-----
>Its a problem their end, they dont have any MX records:
>http://www.dnsreport.com/tools/dnsreport.ch?
domain=tmsg.sytexinc.com
>
>--
>Mark Fugatt
>Microsoft Exchange MVP
>www.exchangetrainer.com
>www.msexchange.org
>
>"christopher willis" <cwillis@icrcsolutions.com> wrote
in message
>news:019501c36acb$4a4cd340$a001280a@phx.gbl...
>> Details:
>>
>>
>> - Exchange2000 server on Win2k server SP3
>> - Email server is working, has been for 5 months now.
>> - All email is comming in fine
>> - All email is going out fine unless sent to
>> user@tmsg.sytexinc.com
>> if sent to user@tmsg.sytexinc.com mail stays in queue,
>> smtp logs stay empty, event logs stay empty.
>>
>> I can send mail to the user from my personal account
>> hosted on an isp so I know the address is good.
>>
>> I have configured my smtp to use external DNS servers
>> (and tried using without the external dns servers
>> configured, just using forwarders on internal dns)
>>
>> A delay report is generated, then 48 hours later an NDR
>> is generated.
>>
>> All mail from the tmsg.sytexinc.com domain is recieved
>> just fine
>>
>> No MX record exists for tmsg.sytexinc.com (on any
>> internet DNS server I could find), however the host
>> record points to the firewall this company is using
that
>> is passing mail back to the email server(raptor
firewall).
>>
>> So the question remains....why will exchange not
connect
>> and send mail to this domain? Any help would be
greatly
>> appreciated as I am at my wits end. I have contacted
the
>> tech and he verifys his clients are recieving mail, and
>> he is not blocking anonymous traffic from my IP.
>>
>> I have also established a telnet connection with
>> tmsg.sytexinc.com on port 25 and sucessfully sent email
>> to this user by manually going through the smtp
commands
>> from Helo to quit....
>>
>> I posted in the smtp forum but this one seems more
active.
>>
>
>
>.
>

Christopher,

What a relief I have the EXACT problem and tried the same
steps to resolve. The domain I can't reach through MS
SMTP is insel.ch.

Thanks for the post. Hopefully it can be resolved.

>-----Original Message-----
>Details:
>
>
>- Exchange2000 server on Win2k server SP3
>- Email server is working, has been for 5 months now.
>- All email is comming in fine
>- All email is going out fine unless sent to
>user@tmsg.sytexinc.com
>if sent to user@tmsg.sytexinc.com mail stays in queue,
>smtp logs stay empty, event logs stay empty.
>
>I can send mail to the user from my personal account
>hosted on an isp so I know the address is good.
>
>I have configured my smtp to use external DNS servers
>(and tried using without the external dns servers
>configured, just using forwarders on internal dns)
>
>A delay report is generated, then 48 hours later an NDR
>is generated.
>
>All mail from the tmsg.sytexinc.com domain is recieved
>just fine
>
>No MX record exists for tmsg.sytexinc.com (on any
>internet DNS server I could find), however the host
>record points to the firewall this company is using that
>is passing mail back to the email server(raptor
firewall).
>
>So the question remains....why will exchange not connect
>and send mail to this domain? Any help would be greatly
>appreciated as I am at my wits end. I have contacted
the
>tech and he verifys his clients are recieving mail, and
>he is not blocking anonymous traffic from my IP.
>
>I have also established a telnet connection with
>tmsg.sytexinc.com on port 25 and sucessfully sent email
>to this user by manually going through the smtp commands
>from Helo to quit....
>
>I posted in the smtp forum but this one seems more
active.
>
>.
>

Mark,

Thanks for the response.

In my case, the message worked fine using Hotmail.com to
send...

Shouldn't the missing MX also give the same results using
Hotmail?

>-----Original Message-----
>Its a problem their end, they dont have any MX records:
>http://www.dnsreport.com/tools/dnsreport.ch?
domain=tmsg.sytexinc.com
>
>--
>Mark Fugatt
>Microsoft Exchange MVP
>www.exchangetrainer.com
>www.msexchange.org
>
>"christopher willis" <cwillis@icrcsolutions.com> wrote
in message
>news:019501c36acb$4a4cd340$a001280a@phx.gbl...
>> Details:
>>
>>
>> - Exchange2000 server on Win2k server SP3
>> - Email server is working, has been for 5 months now.
>> - All email is comming in fine
>> - All email is going out fine unless sent to
>> user@tmsg.sytexinc.com
>> if sent to user@tmsg.sytexinc.com mail stays in queue,
>> smtp logs stay empty, event logs stay empty.
>>
>> I can send mail to the user from my personal account
>> hosted on an isp so I know the address is good.
>>
>> I have configured my smtp to use external DNS servers
>> (and tried using without the external dns servers
>> configured, just using forwarders on internal dns)
>>
>> A delay report is generated, then 48 hours later an NDR
>> is generated.
>>
>> All mail from the tmsg.sytexinc.com domain is recieved
>> just fine
>>
>> No MX record exists for tmsg.sytexinc.com (on any
>> internet DNS server I could find), however the host
>> record points to the firewall this company is using
that
>> is passing mail back to the email server(raptor
firewall).
>>
>> So the question remains....why will exchange not
connect
>> and send mail to this domain? Any help would be
greatly
>> appreciated as I am at my wits end. I have contacted
the
>> tech and he verifys his clients are recieving mail, and
>> he is not blocking anonymous traffic from my IP.
>>
>> I have also established a telnet connection with
>> tmsg.sytexinc.com on port 25 and sucessfully sent email
>> to this user by manually going through the smtp
commands
>> from Helo to quit....
>>
>> I posted in the smtp forum but this one seems more
active.
>>
>
>
>.
>

Christopher,

Also I would think that you would get a reply within
minutes (not 48 hours) if your domain name was blocked...

Something is not connecting...

>-----Original Message-----
>First, thanks for taking the time to respond, however, I
>can send mail from my isp (itdude.net), which is how I
>have been communicating with the admin from
sytexinc.com,
>so I know mail servers are sending to this domain even
>without an MX record.
>
>I can telnet into port 25 on tmsg.sytexinc.com from home
>and send mail using IMC commands, however I cannot
telnet
>in from work. Since I can telnet to other mail servers
>on port 25 I know my firewall is not blocking me,
leading
>me to believe either the ISP or the the company is
>blocking traffic from my domain. Sound correct?
>
>
>>-----Original Message-----
>>Its a problem their end, they dont have any MX records:
>>http://www.dnsreport.com/tools/dnsreport.ch?
>domain=tmsg.sytexinc.com
>>
>>--
>>Mark Fugatt
>>Microsoft Exchange MVP
>>www.exchangetrainer.com
>>www.msexchange.org
>>
>>"christopher willis" <cwillis@icrcsolutions.com> wrote
>in message
>>news:019501c36acb$4a4cd340$a001280a@phx.gbl...
>>> Details:
>>>
>>>
>>> - Exchange2000 server on Win2k server SP3
>>> - Email server is working, has been for 5 months now.
>>> - All email is comming in fine
>>> - All email is going out fine unless sent to
>>> user@tmsg.sytexinc.com
>>> if sent to user@tmsg.sytexinc.com mail stays in queue,
>>> smtp logs stay empty, event logs stay empty.
>>>
>>> I can send mail to the user from my personal account
>>> hosted on an isp so I know the address is good.
>>>
>>> I have configured my smtp to use external DNS servers
>>> (and tried using without the external dns servers
>>> configured, just using forwarders on internal dns)
>>>
>>> A delay report is generated, then 48 hours later an
NDR
>>> is generated.
>>>
>>> All mail from the tmsg.sytexinc.com domain is recieved
>>> just fine
>>>
>>> No MX record exists for tmsg.sytexinc.com (on any
>>> internet DNS server I could find), however the host
>>> record points to the firewall this company is using
>that
>>> is passing mail back to the email server(raptor
>firewall).
>>>
>>> So the question remains....why will exchange not
>connect
>>> and send mail to this domain? Any help would be
>greatly
>>> appreciated as I am at my wits end. I have contacted
>the
>>> tech and he verifys his clients are recieving mail,
and
>>> he is not blocking anonymous traffic from my IP.
>>>
>>> I have also established a telnet connection with
>>> tmsg.sytexinc.com on port 25 and sucessfully sent
email
>>> to this user by manually going through the smtp
>commands
>>> from Helo to quit....
>>>
>>> I posted in the smtp forum but this one seems more
>active.
>>>
>>
>>
>>.
>>
>.
>

Christopher,

Do you have an underscore in your sending SMTP server
name or domain name?

>-----Original Message-----
>Details:
>
>
>- Exchange2000 server on Win2k server SP3
>- Email server is working, has been for 5 months now.
>- All email is comming in fine
>- All email is going out fine unless sent to
>user@tmsg.sytexinc.com
>if sent to user@tmsg.sytexinc.com mail stays in queue,
>smtp logs stay empty, event logs stay empty.
>
>I can send mail to the user from my personal account
>hosted on an isp so I know the address is good.
>
>I have configured my smtp to use external DNS servers
>(and tried using without the external dns servers
>configured, just using forwarders on internal dns)
>
>A delay report is generated, then 48 hours later an NDR
>is generated.
>
>All mail from the tmsg.sytexinc.com domain is recieved
>just fine
>
>No MX record exists for tmsg.sytexinc.com (on any
>internet DNS server I could find), however the host
>record points to the firewall this company is using that
>is passing mail back to the email server(raptor
firewall).
>
>So the question remains....why will exchange not connect
>and send mail to this domain? Any help would be greatly
>appreciated as I am at my wits end. I have contacted
the
>tech and he verifys his clients are recieving mail, and
>he is not blocking anonymous traffic from my IP.
>
>I have also established a telnet connection with
>tmsg.sytexinc.com on port 25 and sucessfully sent email
>to this user by manually going through the smtp commands
>from Helo to quit....
>
>I posted in the smtp forum but this one seems more
active.
>
>.
>

Well, I fixed my problem. My SMTP server was sending an
underscore (_) which works fine for everybody else but
does not conform to RFC2821. I changed the
SystemManager/DefaultSMTPVirtualServer/Properties/Advanced
/FullyQualifiedDomainName from server_1.domain.com to
domain.com. Checked against DNS and all mail is flowing...

Good luck on your issue.

>-----Original Message-----
>It's smtp...I can smtp to everyone on the net but this
>one domain. I have been on the phone with the techs for
>2 days. I can get all way through the ISP to a box just
>outside the firewall, but then boom....nothing is
>touching the firewall...full logging is enabled....
>
>I know I get through his router, but after that is a
>mystery to everyone involved. The damn packets just
>drop...but only when sent from my IP block...I can smtp
>from home across a port 25 telnet and all is well...
>
>I know he is blocking my subnet, through some rule or
>access list, but he swears up and down he is not....
>
>He is running exchange 5.5 and IMS(?) instaed of smtp....
>
>The funny part is this:
>
>home: telnet ipaddress 25 works just fine
>Alexandria: telnet ipaddress 25 works just fine
>Chantilly: telent ipaddress 25 no connection....
>
>and guess where my mail server is.....chantilly....
>
>>-----Original Message-----
>>Christopher,
>>
>>Also I would think that you would get a reply within
>>minutes (not 48 hours) if your domain name was
blocked...
>>
>>Something is not connecting...
>>
>>>-----Original Message-----
>>>First, thanks for taking the time to respond, however,
>I
>>>can send mail from my isp (itdude.net), which is how I
>>>have been communicating with the admin from
>>sytexinc.com,
>>>so I know mail servers are sending to this domain even
>>>without an MX record.
>>>
>>>I can telnet into port 25 on tmsg.sytexinc.com from
>home
>>>and send mail using IMC commands, however I cannot
>>telnet
>>>in from work. Since I can telnet to other mail
servers
>>>on port 25 I know my firewall is not blocking me,
>>leading
>>>me to believe either the ISP or the the company is
>>>blocking traffic from my domain. Sound correct?
>>>
>>>
>>>>-----Original Message-----
>>>>Its a problem their end, they dont have any MX
records:
>>>>http://www.dnsreport.com/tools/dnsreport.ch?
>>>domain=tmsg.sytexinc.com
>>>>
>>>>--
>>>>Mark Fugatt
>>>>Microsoft Exchange MVP
>>>>www.exchangetrainer.com
>>>>www.msexchange.org
>>>>
>>>>"christopher willis" <cwillis@icrcsolutions.com>
wrote
>>>in message
>>>>news:019501c36acb$4a4cd340$a001280a@phx.gbl...
>>>>> Details:
>>>>>
>>>>>
>>>>> - Exchange2000 server on Win2k server SP3
>>>>> - Email server is working, has been for 5 months
now.
>>>>> - All email is comming in fine
>>>>> - All email is going out fine unless sent to
>>>>> user@tmsg.sytexinc.com
>>>>> if sent to user@tmsg.sytexinc.com mail stays in
>queue,
>>>>> smtp logs stay empty, event logs stay empty.
>>>>>
>>>>> I can send mail to the user from my personal account
>>>>> hosted on an isp so I know the address is good.
>>>>>
>>>>> I have configured my smtp to use external DNS
servers
>>>>> (and tried using without the external dns servers
>>>>> configured, just using forwarders on internal dns)
>>>>>
>>>>> A delay report is generated, then 48 hours later an
>>NDR
>>>>> is generated.
>>>>>
>>>>> All mail from the tmsg.sytexinc.com domain is
>recieved
>>>>> just fine
>>>>>
>>>>> No MX record exists for tmsg.sytexinc.com (on any
>>>>> internet DNS server I could find), however the host
>>>>> record points to the firewall this company is using
>>>that
>>>>> is passing mail back to the email server(raptor
>>>firewall).
>>>>>
>>>>> So the question remains....why will exchange not
>>>connect
>>>>> and send mail to this domain? Any help would be
>>>greatly
>>>>> appreciated as I am at my wits end. I have
>contacted
>>>the
>>>>> tech and he verifys his clients are recieving mail,
>>and
>>>>> he is not blocking anonymous traffic from my IP.
>>>>>
>>>>> I have also established a telnet connection with
>>>>> tmsg.sytexinc.com on port 25 and sucessfully sent
>>email
>>>>> to this user by manually going through the smtp
>>>commands
>>>>> from Helo to quit....
>>>>>
>>>>> I posted in the smtp forum but this one seems more
>>>active.
>>>>>
>>>>
>>>>
>>>>.
>>>>
>>>.
>>>
>>.
>>
>.
>