Anyone else have problems emailing Cisco? (senderbase)

Tim Chown tjc at
Wed Sep 24 10:24:07 CEST 2014

My emails to Cisco people are now bouncing.

It seems the cause is a poor rep on one of our MTAs:
The DNS reverse seems fine for

But the email bounce (with username deleted) says:

Final-Recipient: RFC822; xxxxxxxxxx at
Action: failed
Status: 5.1.1
Remote-MTA: DNS;
Diagnostic-Code: SMTP; 550 Connections from the host (2001:630:d0:f102::25e), originating from SenderBase Network Owner ID: None, are being rejected due to a low SenderBase Reputation Score. See for more information or contact your IT support team.

If any Cisco people are on this list, please have someone have a look. I think Andrew Yourtchenko is, and he is one person with bounces.


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