undeliverable email

[singlehouse03]

I host exchange server 2007.Someone try to email us from theirdomain.They can email though blackberry but not through webmail.Here are two error messages they get.Any idea?Many thanks!

chad


(1)"you don't have permission to send to this recipient.Fo
assistant,contact your system administrator.
<vms 173005.mailsrvcs.net(tcp-daemon)#5.7.1 smtp;550 5.7.1 recipient
not authorized,your IP has been found on a block list"

(2)Microsoft Mail Internet Headers Version 2.0
Received: from mail pickup service by hisdomain.com with Microsoft
SMTPSVC; Wed, 12 Nov 2008 14:45:20 -0500
thread-index: AclE/zJKLWkmBXZxR36gceH9kYOazA==
Cc:
Bcc:
Message-ID: <18CC2932EC0343BA943CBE851CCBAD08@Halmar.local>
Content-Transfer-Encoding: 7bit
Date: Wed, 12 Nov 2008 14:45:20 -0500
From: "Verizon Online Postmaster" <postmaster@verizon.net>
X-Mailer: Microsoft CDO for Exchange 2000
Subject: Delivery Notification: Delivery has failed
To: <user@hisdomain.com>
Content-Class: urn:content-classes:message
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4325
Importance: normal
Priority: normal
MIME-Version: 1.0
Content-Type: multipart/report;
report-type=delivery-status;
boundary="Boundary_(ID_m4YDu2mz/Xk3se0jw8OgRg)"
X-OriginalArrivalTime: 12 Nov 2008 19:45:20.0989 (UTC) FILETIME=
[326970D0:01C944FF]

--Boundary_(ID_m4YDu2mz/Xk3se0jw8OgRg)
Content-Transfer-Encoding: 7bit
Content-Type: text/plain;
charset="us-ascii"
Content-Language: en-US

--Boundary_(ID_m4YDu2mz/Xk3se0jw8OgRg)
Content-Transfer-Encoding: 7bit
Content-Type: message/delivery-status

--Boundary_(ID_m4YDu2mz/Xk3se0jw8OgRg)
Content-Transfer-Encoding: 7bit
Content-Type: message/rfc822

Return-path: <user@hisdomain.com>
Received: from tcp-daemon.vms173005.mailsrvcs.net by
vms173005.mailsrvcs.net
(Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006))
id <0KA800H7RJMWR100@vms173005.mailsrvcs.net>; Wed,
12 Nov 2008 13:33:21 -0600 (CST)
Received: from hisdomain.com ([71.249.230.73])
by vms173005.mailsrvcs.net
(Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006))
with ESMTPA id <0KA800MJ1JMV6OR8@vms173005.mailsrvcs.net>; Wed,
12 Nov 2008 13:32:56 -0600 (CST)
Date: Wed, 12 Nov 2008 14:32:48 -0500
From: "user" <user@hisdomain.com>
Subject: RE: test
To: <ouruser @mydomain.com >
Cc: <ouruser @mydomain.com >
Message-id:
<70D80D22C48A9546929E0450148FF7B31760FD@halmarsvr1.Halmar.local>
MIME-version: 1.0
X-MIMEOLE: Produced By Microsoft Exchange V6.5.7226.0
Content-type: multipart/alternative;
boundary="Boundary_(ID_g7FAhljry3vbIjN8oM4hBQ)"
Content-class: urn:content-classes:message
Thread-topic: test
Thread-index: AclE1DAG6cl55GkOTzaxNIJv/fi58wABl8UQAAi3t+A=
X-MS-Has-Attach:
X-MS-TNEF-Correlator:

--Boundary_(ID_g7FAhljry3vbIjN8oM4hBQ)
Content-type: text/plain; charset="us-ascii"
Content-transfer-encoding: quoted-printable

--Boundary_(ID_g7FAhljry3vbIjN8oM4hBQ)
Content-type: text/html; charset="us-ascii"
Content-transfer-encoding: quoted-printable


--Boundary_(ID_g7FAhljry3vbIjN8oM4hBQ)--

--Boundary_(ID_m4YDu2mz/Xk3se0jw8OgRg)--

 

[paella33]

5.7.1 recipient
not authorized,your IP has been found on a block list"


That is the reason. The server used by webmail appears to be on a block list you are using.

 

[Zelandakh]

Check your public IP for your Exchange server. You could be an open relay, you could be a known spammer, you could be a DHCP address (this catches a lot of people) or you could be relaying via your ISP who has got on a block list.