Returned mail: see transcript for details

[Mail Delivery Subsystem <MAILER-DAEMON at mail58c28 dot carrierzone dot com>]

The original message was received at Tue, 19 May 2015 08:41:35 -0400
from cpe-et001203.cust.jaguar-network.net [85.31.195.58]

   ----- The following addresses had permanent fatal errors -----
jerikawild18@gmail.com
    (reason: 552-5.7.0 This message was blocked because its content presents a potential)
    (expanded from: jerikaw@vantex.com)
tcastano80@gmail.com
    (reason: 552-5.7.0 This message was blocked because its content presents a potential)
    (expanded from: teresa@vantex.com)
roberta.s.barrera@gmail.com
    (reason: 552-5.7.0 This message was blocked because its content presents a potential)
    (expanded from: roberta@vantex.com)
alistairmelliott@gmail.com
    (reason: 552-5.7.0 This message was blocked because its content presents a potential)
    (expanded from: alistair@vantex.com)

   ----- Transcript of session follows -----
... while talking to gmail-smtp-in.l.google.com.:
>>> DATA
<<< 552-5.7.0 This message was blocked because its content presents a potential
<<< 552-5.7.0 security issue. Please visit
<<< 552-5.7.0 http://support.google.com/mail/bin/answer.py?answer=6590 to review our
<<< 552 5.7.0 message content and attachment content guidelines. y14si8922486vdi.26 - gsmtp
554 5.0.0 Service unavailable

Reporting-MTA: dns; mail58c28.carrierzone.com
Received-From-MTA: DNS; cpe-et001203.cust.jaguar-network.net
Arrival-Date: Tue, 19 May 2015 08:41:35 -0400

Original-Recipient: rfc822;probe@vantex.com
Final-Recipient: RFC822; probe@vantex.com
X-Actual-Recipient: RFC822; jerikawild18@gmail.com
Action: failed
Status: 5.7.0
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 552-5.7.0 This message was blocked because its content presents a potential
Last-Attempt-Date: Tue, 19 May 2015 08:41:42 -0400

Original-Recipient: rfc822;probe@vantex.com
Final-Recipient: RFC822; probe@vantex.com
X-Actual-Recipient: RFC822; tcastano80@gmail.com
Action: failed
Status: 5.7.0
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 552-5.7.0 This message was blocked because its content presents a potential
Last-Attempt-Date: Tue, 19 May 2015 08:41:42 -0400

Original-Recipient: rfc822;probe@vantex.com
Final-Recipient: RFC822; probe@vantex.com
X-Actual-Recipient: RFC822; roberta.s.barrera@gmail.com
Action: failed
Status: 5.7.0
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 552-5.7.0 This message was blocked because its content presents a potential
Last-Attempt-Date: Tue, 19 May 2015 08:41:42 -0400

Original-Recipient: rfc822;probe@vantex.com
Final-Recipient: RFC822; probe@vantex.com
X-Actual-Recipient: RFC822; alistairmelliott@gmail.com
Action: failed
Status: 5.7.0
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 552-5.7.0 This message was blocked because its content presents a potential
Last-Attempt-Date: Tue, 19 May 2015 08:41:42 -0400

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Date: Tue, 19 May 2015 14:41:33 +0100
From: bug-gcc <bug-gcc@gnu.org>
Message-ID: <555B2F7D.3B46DCE8@gnu.org>
To: <probe@vantex.com>
Subject:  adjustment reminder 
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