Anyone else have problems emailing Cisco? (senderbase)

[Tim Chown]

My emails to Cisco people are now bouncing.

It seems the cause is a poor rep on one of our MTAs:
http://www.senderbase.org/lookup/?search_string=2001%3A630%3Ad0%3Af102%3A%3A25e
The DNS reverse seems fine for falcon.ecs.soton.ac.uk

But the email bounce (with username deleted) says:

Final-Recipient: RFC822; xxxxxxxxxx at cisco.com
Action: failed
Status: 5.1.1
Remote-MTA: DNS; alln-mx-01.cisco.com
Diagnostic-Code: SMTP; 550 Connections from the host falcon.ecs.soton.ac.uk (2001:630:d0:f102::25e), originating from SenderBase Network Owner ID: None, are being rejected due to a low SenderBase Reputation Score. See http://www.senderbase.org 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.

Tim

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