550 #5.7.1 Your access to submit messages to this e-mail system has been rejected.

[rdavis]

Last week we noticed some emails not leaving the Exchange queue and now this week they are getting blocked right away from the exchange server. I am pretty sure that this in on the Recieving end as we can email everyone else just fine.

 

As Frontier has purchased Verizon's Telephone and Internet services earler this year and are just now moving servers and rearranging NOC's. I see a mess comming our way.

 

*** Virus defs are current on all computers.

*** Verified twice yesterday.

*** Not listed on any RBL.

*** Sent an unblock request to Frontiernet.

 

Here is some changed header information from the bounceback.

 

----- Original Message -----

From: "Mail Delivery System" <DEFG@cloud.hostingfuze.com

To: <ABC@1stwebhost.net

Sent: Monday, October 18, 2010 3:07 PM

Subject: Mail delivery failed: returning message to sender

 

 

This message was created automatically by mail delivery software.

 

A message that you sent could not be delivered to one or more of its

recipients. This is a permanent error. The following address(es) failed:

 

XYZ@frontier.com

SMTP error from remote mail server after RCPT TO:<XYZ@frontier.com:

host mx.frontiernet.net [66.133.129.79]: 550 #5.7.1 Your access to submit messages to this e-mail system has been rejected.

 

------ This is a copy of the message, including all the headers. ------

 

Return-path: <ABC@1stwebhost.net

Received: from localhost.localdomain ([127.0.0.1] helo=localhost)by cloud.hostingfuze.com with esmtpa (Exim 4.69)

(envelope-from <ABC@1stwebhost.net)id 1P7xrn-0000wP-0u

for XYZ@frontier.com; Tue, 19 Oct 2010 02:07:39 +0400

Received: from 71.111.177.137 ([71.111.177.137]) by http://www.stwebhost.net(Horde MIME library) with HTTP; Tue, 19 Oct 2010

 

02:07:38 +0400 Message-ID: <20101019020738.kd86o9il9cgkwkc8@www.1stwebhost.net

Date: Tue, 19 Oct 2010 02:07:38 +0400

From: ABC@1stwebhost.net

To: XYZ@frontier.com

Subject: test

MIME-Version: 1.0

Content-Type: text/plain;

charset=ISO-8859-1;

DelSp="Yes";

format="flowed"

Content-Disposition: inline

Content-Transfer-Encoding: 7bit

User-Agent: Internet Messaging Program (IMP) H3 (4.1.6)

 

 

The WHOIS:

OrgName: Frontier Communications of America, Inc.

OrgId: FRTR

Address: 180 South Clinton AVE

City: Rochester

StateProv: NY

PostalCode: 14646

Country: US

RegDate: 1996-05-09

Updated: 2009-09-29

Comment: all abuse complaints will only be answered when sent to abuse@frontiernet.net Ref: http://whois.arin.net/rest/org/FRTR

[GGWH-James]

My first thoughts:

• rDNS
  
• You're listed on one or more block-lists.
  
• You've previously sent e-mail to a non-existent account on their system.
  

I seem to recall issues where Frontier and rDNS was the cause of that in the past.

Edited October 19, 2010 by GGWH-James

[Roger]

This isn't good - Received: from localhost.localdomain ([127.0.0.1] helo=localhost)

 

I agree with Jamroar. Plus FYI the non-existent account would be a honeypot spam trap most likely.