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Sent Mail Returned Undelivered

Posted on 2008-06-23
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Last Modified: 2013-11-30
Recently our company has experienced an increase in the number of email messages being returned undelivered. The returned messages were initially returned with the Barracuda Reputation message "Client host (host.hosting company name.com) blocked using Barracuda Reputation".  A check of the domain IP address indicated that it was marked as poor on the Barracuda Reputation System. The last bunch of returned messages only mentioned the following: "A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:"
The returned email messages are genuine and delivery has been successful before this problem started. Thanks
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Question by:Generator
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Expert Comment

by:Christopher Martinez
ID: 21851251
Well, its possible your company is blacklisted by Barracuda. Sounds like it is anyway. You will need to contact them and figure out why your reputation is poor with them and to figure out why. Good luck though, reputation of this company is that their PR stinks.
http://www.barracudacentral.com/index.cgi?p=lookups&r=1&ip=140.184.76.9
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Author Comment

by:Generator
ID: 21851403
I had contacted them (last Friday) and received the following message: "Thank you for submitting your request. If this is your first request, your IP address will have its reputation increased to "normal" for 48 hours while we investigate. It may take up to 1 hour for the reputation increase to propagate to all Barracuda Spam Firewalls globally. We appreciate your patience and apologize for any inconvenience. Your confirmation number is XXXX-21" When I checked the mail IP address again this evening it's still in the "Poor" zone. I have never run into this Barracuda Reputation problem before - is this something new on the Internet? It is not blocking all the sent email only certain ones that were OK a week ago. Thanks
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Accepted Solution

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Christopher Martinez earned 1500 total points
ID: 21851436
Well...barracuda has a new way of modernizing the email spam world. its called predictive sender profiling. and it generally blocks any email that obsfucates web identities. To get off this list, you will have to deal with barracuda. This site may help, i hope
http://www.contactology.com/blog/2006/12/13/staying-off-barracudas-blacklist/
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Author Comment

by:Generator
ID: 21880863
Thanks for clearing this up. Is there any way to follow an email message (similiar to a" tracert" ) to map the route of the message and see where it is stopped? Thanks.
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