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8.8

Verizon blocking mail - have no idea what they are looking for

Asked by drewster999 in Simple Mail Transfer Protocol (SMTP), Exchange Email Server, Email Software

Tags: Mail being blocked

Basic issue is one of our customers cannot receive mail from us.  We are using Exchange with an smtp server in our DMZ.  I attempted a direct telnet connection and the following results
220-mr4.ash.ops.us.uu.net ESMTP cf-uu-alterdial-$Revision: 1.4 $; Wed, 19 Dec 20
07 13:45:51 GMT
220 Please see http://www.verizonbusiness.com/terms/us/aup/ for Acceptable Use P
olicy
ehlo hermitageins.com
250-mr4.ash.ops.us.uu.net Hello xd1156d52.ip.e-nt.net [209.21.109.82], pleased t
o meet you
250 ENHANCEDSTATUSCODES
MAIL FROM:aroos@hermitageins.com
550 5.0.0 Denied: bad-c

It looks like the error message is being truncated.  Verizon will not help as we are not customer and the customer is not getting very far with them.  Does anyone know if there is something they are looking for that we might not have set correctly.  We don't have this issue with any other customer.
[+][-]12/19/07 05:55 AM, ID: 20499497Expert Comment

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[+][-]12/19/07 06:35 AM, ID: 20499766Author Comment

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[+][-]12/19/07 08:55 AM, ID: 20500908Accepted Solution

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About this solution

Zones: Simple Mail Transfer Protocol (SMTP), Exchange Email Server, Email Software
Tags: Mail being blocked
Sign Up Now!
Solution Provided By: Sembee
Participating Experts: 2
Solution Grade: B
 
[+][-]12/20/07 09:23 AM, ID: 20508336Author Comment

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