Comcast blocking Plusnet Again

[#1]

Looks like Comcast is blocking Plusnet again.  Here's a header from a recent bounced email.
From - Mon May 11 16:03:19 2009
X-Account-Key: account2
X-UIDL: UID36453-1186514231
X-Mozilla-Status: 0001
X-Mozilla-Status2: 10000000
X-Mozilla-Keys:                                                                               
Return-path: <>
Envelope-to: xx@xxx.plus.com
Delivery-date: Mon, 11 May 2009 12:41:19 +0100
Received: from [212.159.7.98] (helo=mx.pcl-ipin02.plus.net)
  by pih-inmx17.plus.net with esmtp (PlusNet MXCore v2.00) id 1M3Tsl-0003Z6-Ct
  for xx@xxx.plus.com; Mon, 11 May 2009 12:41:19 +0100
Authentication-Results: mx.pcl-ipin02.plus.net; dkim=neutral (message not signed) header.i=none
Received-SPF: None identity=pra; client-ip=84.92.2.65;
  receiver=mx.pcl-ipin02.plus.net;
  envelope-from="";
  x-sender="MAILER-DAEMON@pcl-ipout02.plus.net";
  x-conformance=sidf_compatible
Received-SPF: None identity=mailfrom; client-ip=84.92.2.65;
  receiver=mx.pcl-ipin02.plus.net;
  envelope-from="";
  x-sender="postmaster@relay.pcl-ipout02.plus.net";
  x-conformance=sidf_compatible
Received-SPF: None identity=helo; client-ip=84.92.2.65;
  receiver=mx.pcl-ipin02.plus.net;
  envelope-from="";
  x-sender="postmaster@relay.pcl-ipout02.plus.net";
  x-conformance=sidf_compatible
X-SBRS: 5.3
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AjkDADOsB0pUXAJBmWdsb2JhbACNbwGJIAEBAQEBCAsKBxFDq2+MOw
X-IronPort-AV: E=McAfee;i="5300,2777,5611"; a="107307430"
X-IronPort-AV: E=Sophos;i="4.40,327,1238972400";
  d="scan'208";a="107307430"
Received: from mx.ironport.plus.net (HELO relay.pcl-ipout02.plus.net) ([84.92.2.65])
  by mx.pcl-ipin02.plus.net with ESMTP; 11 May 2009 12:41:06 +0100
Received: from localhost by relay.pcl-ipout02.plus.net;
  11 May 2009 12:41:06 +0100
Date: 11 May 2009 12:41:06 +0100
To: xx@xxx.plus.com
From: "Mail Delivery System" <MAILER-DAEMON@pcl-ipout02.plus.net>
MIME-Version: 1.0
Message-ID: <E1M3Tsl-0003Z6-Ct@pih-inmx17.plus.net>
X-PN-Virus-Filtered: by PlusNet MXCore (v5.00)
X-PN-Spam-Filtered: by PlusNet MXCore (v5.00)
Subject: Delivery Status Notification (Failure)
X-Antivirus: AVG for E-mail 8.0.238 [270.12.24/2108]
Content-Type: multipart/mixed; boundary="=======AVGMAIL-4A083E370000===

[#2]

I'm still getting bounced email from Comcast.  Is anything being done?

[#3]

Just spotted this.  Asking the networks team.

[#4]

This seems to happen regularly - I email neice in USA and they bounce back!  so I send again and they get through.................... she enquired at that end for me and was told Plusnet is one of several ISPs that they block due to spam!

[#5]

Thanks Kelly. As jmdlp says Plusnet are constantly being bounced by Comcast.