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Avatar of harabie2
harabie2

Mail rejected by Windows Live Hotmail
when i try to send message to email account at hotmail the postmaster of my domain send to me Undeliverable message  with the following text:

Your message did not reach some or all of the intended recipients.

      Subject:      test
      Sent:      3/4/2010 11:01 AM

The following recipient(s) could not be reached:

      hirabie68@hotmail.com on 3/4/2010 11:01 AM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <email3.ezdk.corp #5.5.0 smtp;550 SC-002 Mail rejected by Windows Live Hotmail for policy reasons. The mail server IP connecting to Windows Live Hotmail has exhibited namespace mining behavior. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help. Email/network admins, please visit http://postmaster.live.com for email delivery information and support>

   i try to make SPF record for my domain name as microsoft Sender ID Management Team recommend but i still can not send email to hotmil from my account

send attached the header of the Undeliverable message
 
please advise me to solve this problem

best regards

Hatem  Rabie

Ezz steel
hotmail-error-message.txt

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Avatar of AkhaterAkhater🇱🇧

" The mail server IP connecting to Windows Live Hotmail has exhibited namespace mining behavior"

looks like you are black listed

do you have a ptr record

Avatar of harabie2harabie2

ASKER

yes i have PTR record

Avatar of AkhaterAkhater🇱🇧

then you are blacklisted, did you run any rbl check ?

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yes i Run rbl check and i m not listed in any rbl as the result of  http://www.dnsbl.info/

Avatar of AkhaterAkhater🇱🇧

what IP do you use to send emails ?

196.204.225.212

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any new news Mr. akhater

regards

Avatar of AkhaterAkhater🇱🇧

Sorry for that I did check on many RBLs and, as you said, you are NOT blacklisted.

The only thing I can think off is that this ip address is returning many PTR record.

is this a new problem ?

yes it is a new problem , and I have just add PTR record for my domain ezzstee.com and also for other domains  that hosted at the same server Since last 3 days. exactly  after this problem happen and Microsoft advise me to have SPF record and PTR record.

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my domain is ezzsteel.com

Avatar of AkhaterAkhater🇱🇧

so you mean the problem started BEFORE you create PTR records and kept on going AFTER you did ?

yes

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Avatar of AkhaterAkhater🇱🇧

can you try to send an email from your exchange server to hotmail using telnet ?
tell me at which point it fails ?

yes i try to send via telnet but it is also give me Undeliverable:Delivery Status Notification (Failure) message the steps i do is as the following :
mail from : harabie@ezzsteel.com
250 2.1.0 harabie@ezzsteel.com....Sender OK
rcpt to : hirabie68@hotmail.com
501 5.5.4 Invalid Address
rcpt to : hirabie68@hotmail.com
250 2.1.5 hirabie68@hotmail.com
data
354 Please start mail input.
subject : test

this is test message
.
250 Mail queued for delivery.
quit
500 5.3.3 Unrecognized command
quit
221 Closing connection. Good bye.

Avatar of AkhaterAkhater🇱🇧

i don't get it , in the telnet log u sent me it is written mail queued for delivery

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this is the underelvable message the system send to me when i try to send via telnet , keep in mind that when i  try to send via telnet to yahoo it was reached


Your message did not reach some or all of the intended recipients.

      Subject:      
      Sent:      3/6/2010 1:15 PM

The following recipient(s) could not be reached:

      hirabie68@hotmail.com on 3/6/2010 1:15 PM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <email3.ezdk.corp #5.5.0 smtp;550 SC-002 Mail rejected by Windows Live Hotmail for policy reasons. The mail server IP connecting to Windows Live Hotmail has exhibited namespace mining behavior. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help. Email/network admins, please visit http://postmaster.live.com for email delivery information and support>

Hello,

The reason you are being blocked is that the Windows Live email firewall software has seen a large number of emails coming from your IP with non-existant hotmail addresses in the To field. When this behaviour occurs, it generally indicates the sender is trying to namespace mine for valid addresses. Namespace mining is a practice done by spammers. It involves sending a large number of emails to a given namespace with random left hand portions of the email addresses. Those that don't produce an NDR of "invalid address" are then targeted more directly by the spammer.

You may have accidentally done this, you may have a virus on your network, or your mail server might be an open relay. Once you have determine the cause and resolved the issue, you wil need to contact the Windows Live postmaster to get your IP removed from their block list.

JJ

Avatar of Rick HobbsRick Hobbs🇺🇸

Do you have an entry in your firewall allowing only your mail server to send out on port 25?  If not, add this immediately.  If you can set up syslog for your router, do so and monitor port 25 for outgoing data.

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Avatar of harabie2harabie2

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That may solve the problem temporarily but you need to figure out what caused them to blacklist your in the first place or your new IP will get blacklisted too.

JJ

I think we registed at firist time becouse we did not have PTR record and spf record that I added before changing The IP
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Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.