Emails being rejected

This Monday I moved offices from one location to another. I received a new IP block. I modified my MX records and ptr records but did them incorrectly. I had incoming mail going to my Barracuda Spam device and outgoing mail leaving through my exchange server. When mail started being rejected I panicked and started sending mail outbound through my barracuda as well. So now I have my mx record pointing to barracuda and my ptr record resolving to barracuda. I made that last change today. Mail is still bring rejected. How can I validate that my current DNS configuration is good?. Does this take time to resolve? And if so how long before they will start being delivered?

Please help... My email has been unstable for 3 days now and things are not good!!

BSModlinAsked: 2014-02-12

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LVL 8

Mandeep KhalsaConnect With a Mentor Commented: 2014-02-13

When people meet we say Hello to each other. The same way when email servers start the process of sending and receiving emails they do a "handshake". In this handshake they identify themselves with their names. This name is also listed on the banner.

For example google's mail server identifies itself as

220 mx.google.com ESMTP r6si802295qcl.98 - gsmtp

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In your case, earlier it was coming up blank however now it shows this

220 barracuda.structuredassetservices.com ESMTP (54b580e75d81dcab857e0a4d65d1b878)

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So your banner is now OK. As for the PTR's lets put that on hold because I don't think it is what is causing your problem here.

The original header you posted - It was for incoming email and its clear that it was rejected due to your IP being on the blacklist.

The second header you posted says:

Received: from barracuda.structuredassetservices.com (10.1.10.x) by
 sasmail.structuredassetservices.com (10.1.10.x) with Microsoft SMTP Server
 id 8.3.327.1;

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Outbound mail relays through the barracuda and I believe the email headers say the mail is going out from barracuda.structuredassetservices.com

So the question is what is sasmail? Header says Barracuda forwarded the email to sasmail and your comment says the other way around.

LVL 8

Mandeep KhalsaCommented: 2014-02-12

Have you seen the rejection emails you are getting? What does it exactly say? Have you checked the settings on Barracuda device to make sure it is not using 3rd party forwards or anything funky that changed due to the new IP block?

BSModlinAuthor Commented: 2014-02-12

Here is an example of the undeliverable:
Diagnostic information for administrators:

Generating server: barracuda.structuredassetservices.com

jcrespo@netvoix.com
#< #5.0.0 X-Spam-&-Virus-Firewall; host netvoix-com.mail.eo.outlook.com[207.46.163.138] said: 550 5.7.1 Service unavailable; Client host [71.16.130.204] blocked using Blocklist 1; To request removal from this list please forward this message to delist@messaging.microsoft.com (in reply to RCPT TO command)> #SMTP#

Original message headers:

X-ASG-Debug-ID: 1392240338-06de93103a56360001-savSPn
Received: from sasmail.StructuredAssetServices.local ([10.1.10.27]) by
barracuda.structuredassetservices.com with ESMTP id 0kig20pvPnqQ9aEt
(version=TLSv1 cipher=AES128-SHA bits=128 verify=NO) for
<jcrespo@netvoix.com>; Wed, 12 Feb 2014 16:25:38 -0500 (EST)
X-Barracuda-Envelope-From: bmodlin@structuredassetservices.com
Received: from sasmail.StructuredAssetServices.local
([fe80::10f:ad4d:a34a:7ec4]) by sasmail.StructuredAssetServices.local
([fe80::10f:ad4d:a34a:7ec4%11]) with mapi; Wed, 12 Feb 2014 16:26:03 -0500
From: Brian Modlin <bmodlin@structuredassetservices.com>
To: "jcrespo@netvoix.com" <jcrespo@netvoix.com>
Date: Wed, 12 Feb 2014 16:26:02 -0500
Subject: test
Thread-Topic: test
X-ASG-Orig-Subj: test
Thread-Index: Ac8oOQWrVlASy9wETQ+i2hLWv1bctw==
Message-ID: <0BAA22B50820694AA876F9AF0ECD9A6B16230FE146@sasmail.StructuredAssetServices.local>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: multipart/related;
      boundary="_006_0BAA22B50820694AA876F9AF0ECD9A6B16230FE146sasmailStruct_";
      type="multipart/alternative"
MIME-Version: 1.0
X-Barracuda-Connect: UNKNOWN[10.1.10.27]
X-Barracuda-Start-Time: 1392240338
X-Barracuda-Encrypted: AES128-SHA
X-Barracuda-URL: http://10.1.10.36:8000/cgi-mod/mark.cgi
X-Virus-Scanned: by bsmtpd at structuredassetservices.com
X-Barracuda-BRTS-Status: 1
X-Barracuda-Spam-Score: 0.00
X-Barracuda-Spam-Status: No, SCORE=0.00 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests=EXTRA_MPART_TYPE, HTML_MESSAGE
X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.2.145061
      Rule breakdown below
       pts rule name description
      ---- ---------------------- --------------------------------------------------
      0.00 EXTRA_MPART_TYPE Header has extraneous Content-type:...type= entry
      0.00 HTML_MESSAGE BODY: HTML included

LVL 8

Mandeep KhalsaCommented: 2014-02-13

You are still blacklisted. Check the same section on other failed messages you are getting and if the messages are different post them here. But based on this header you need to get your network cleaned and unblocked first. See the error message below:

#< #5.0.0 X-Spam-&-Virus-Firewall; host netvoix-com.mail.eo.outlook.com[207.46.163.138] said: 550 5.7.1 Service unavailable; Client host [71.16.130.204] blocked using Blocklist 1;