Emails stack on queue when using MX record

Hello,

When I'm using MX record associated with the recipient domain on send connectors I see in the queue viewer some emails that are stacked for a long time (It seems that are junk emails), and if I change the send connector to use a smart host sender the emails are immediately transferred

Any idea why it's happening because I received emails and not send, the way it is not moved from the queue immediately when I'm using MX record?

Regards,
Dvir
compx_itAsked:
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DrAtomicCommented:
Is the MX record pointing to an IP address instead of an A record maybe?

Also be sure to perform an open relay test against that exchange server ( http://mxtoolbox.com/diagnostic.aspx or http://www.mailradar.com/openrelay/) another helpfull article in that regard is http://support.microsoft.com/en-us/kb/324958 .
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compx_itAuthor Commented:
I'm not anderstood your quetion, maybe I'll be more clear, when i'm saying MX record I meen on the delivery option.
I attach a screenshot for example
1.JPG
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DrAtomicCommented:
Forget about the mx record question for now, i'll come back to it when needed. For now, can you perform the test below and let us know the outcome?

(From http://support.microsoft.com/en-us/kb/324958) From the remote client, follow these steps:
Click Start, click Run, type telnet, and then click OK.
At the Telnet command prompt, type set local_echo, and then press ENTER.
At the Telnet command prompt, type open sbs-IP-address 25, and then press ENTER (where sbs-IP-address is the external public IP address of the Small Business Server computer).

The output is similar to the following:
220 server.smallbusiness.local Microsoft ESMTP MAIL Service, Version: 5.0.2195.4905 ready at "date" -0500
Note The "Version" reference may vary, depending on the version of Small Business Server.
Type ehlo anydomain.com, and then press ENTER (where anydomain is not the Small Business Server computer's e-mail domain. Make sure that the last line is:
250 OK
Type mail from:youremail@anydomain.com, and then press ENTER (where youremail@anydomain is an SMTP address that is not hosted on the Small Business Server computer). Make sure that the result is:
250 2.1.0 youremail@anydomain.com....Sender OK
Type rcpt to:user@spam.com, and then press ENTER (where user@spam is not your e-mail domain). Make sure that the result is one of the following two responses:
550 5.7.1 Unable to relay for user@spam.com

-or-

250 2.1.5 user@spam.com
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KimputerCommented:
First, in the queue, really try to get the details of all those email (at least check from: and to:, read subject to get more sense of it). It could be real emails from your users, or it could be out of office replies. It could also be NDR's.

Next, find out WHY it's in the queue. Are they non-existent email addresses? Or are they going to real addresses?
If they're non-existent, it's only logical it's in the queue.
If they're going to real addresses, find out if you're on a blacklist.
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compx_itAuthor Commented:
Hi,

I figure out that the emails that are stuck on qeueu are with no sender adress: From Address: <>

Any idea how to fix it, i'm thinknig the problrm is with the spam software, i'm using third part software for spam, not edge.
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KimputerCommented:
What about the To: address ? What about the subject?
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compx_itAuthor Commented:
Identity: WIN-2012-1\586\58884001628226
Subject: ‏‏לא ניתן למסירה: [SPAM] My photo
Internet Message ID: <ae8044a0-403d-41e2-89a3-2defd1789ed2@WIN-2012-1.mail.local>
From Address: <>
Status: Ready
Size (KB): 101
Message Source Name: DSN
Source IP: 255.255.255.255
SCL: -1
Date Received: 01/04/2015 16:23:35
Expiration Time: 03/04/2015 16:23:35
Last Error:
Queue ID: WIN-2012-1\586
Recipients:  accompanya29@glamorousfood.com;2;2;[{LRT=};{LED=};{FQDN=};{IP=}];0;CN=575,CN=Connections,CN=Exchange Routing Group (DWBGZMFD01QNBJR),CN=Routing Groups,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=First Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=mail,DC=local;0
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KimputerCommented:
Just to be sure, is  your email domain @glamorousfood.com?
In that case, it's due to the user accompanya29 not existing (and the other emails probably have some random username as well)

If @glamorousfood.com is NOT your email, it means some spammer sent it to your email domain (but with a non-existent user), then your mail server want to send it back telling the user "this user doesn't exist", but since spammers don't use real email addresses, it will now be in the queue.
The only way to solve this is to NOT use non-delivery reports for spam, or if it's not available in the spam settings, then you should disable it globally (but normal users making typos, will also NOT get an NDR).
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compx_itAuthor Commented:
Thanks for your help.
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