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e-mail deliverability


I had a bounce today from a customer and this was the message text:

The original message was received at Thu, 5 Jan 2012 17:34:09 -0500 from wsip-123-123-12312.ph.ph.cox.net [99.999.99.999]

   ----- The following addresses had permanent fatal errors ----- <some@someserver.com>
    (reason: 554-smtp2.someserver.com)

Transcript of session follows ----- ... while talking to smtp.someserver.com.:
<<< 554-smtp.someserver.com
<<< 554 Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.
... while talking to smtp2.someserver.com.:
<<< 554-smtp2.someserver.com
<<< 554 Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.
554 5.0.0 Service unavailable

I checked SenderScore of my cox ip and it got a 20 which is really really bad.  When I checked my score of our actual vps that does the e-mailing, it has a 97.  My assumption here is that it is cox that is giving me problem but which one of these are effecting me?  Is it because I am on cox's shared pool?  Any suggestions on how to enhance deliverability?  No spam, just sending customers reports...

Thanks!
Zach
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rpzach
Asked:
rpzach
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1 Solution
 
MetallimirkCommented:
You will need to do several things to fix this. First, make sure you are using a security certificate. then try the following:

1) Visit http://mxtoolbox.com/SuperTool.aspx and enter your public IP address for your mail gateway
This list will provide you with your list of offenders, then you know where you focus your efforts in getting your IP reputation fixed

2) Visit http://www.sendmail.com/sm/resources/tools/ip_reputation/ and enter your public IP for your mail gateway
This will let you know if there is SPAM coming from your site (or what is seen as SPAM). You may have a malware issue causing SPAM to be transmitted

3) Make sure you have all the latest microsoft patches installed and antivirus installed

4) Check out these other sites for more info:
http://www.reputationauthority.org/index.php
http://www.trustedsource.org/

Good luck.
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rpzachAuthor Commented:
IP Reputation Class       Volume: Transitory
Risk: 40%       The final reputation classifications that can be used in making decisions about the IP.
Volume      0       Calculated daily average of the volume from the last 30 days, ranging from 0 to 10 with 0 being a source IP having no monitored traffic.
Weighted Risk       61%       This value represents the risk level, a composite value that weights a host of variables. A value of 0 in the Risk Level represents a reserved IP and a value 100 represents a blacklisted IP.
Spam Ratio      0%       The spam ratio is calculated by dividing the monitored spam volume by the total monitored volume over the last 30 days.
Valid Bulk Ratio       0%       The valid bulk ratio is calculated by dividing the monitored valid bulk volume by the total monitored volume over the last 30 days

That's the report it gives me back for my mail gateway.  So it isn't my cox ip that is causing the problem?  because when I lookup my cox IP I get this:

IP Reputation Class       Volume: Transitory
Risk: 60%       The final reputation classifications that can be used in making decisions about the IP.
Volume      0       Calculated daily average of the volume from the last 30 days, ranging from 0 to 10 with 0 being a source IP having no monitored traffic.
Weighted Risk       70%       This value represents the risk level, a composite value that weights a host of variables. A value of 0 in the Risk Level represents a reserved IP and a value 100 represents a blacklisted IP.
Spam Ratio      71%       The spam ratio is calculated by dividing the monitored spam volume by the total monitored volume over the last 30 days.
Valid Bulk Ratio       0%       The valid bulk ratio is calculated by dividing the monitored valid bulk volume by the total monitored volume over the last 30 days

So my cox ip's rep is waaaaaaaaaaaaaay worse from what I am seeing.

no blacklist or interesting facts on sendmail.com...
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MetallimirkCommented:
Yes, there is an issue here. I think you have identified the root cause of the problem. At this point, the easiest thing to do is talk to Cox and see if they can reset your IP (guessing that it may be a static IP). This would be the least cost and easiest method of solving the issue. I am sure that there may be other alternative solutions, but now your getting into an area where I have less experience. I hope this puts you on the right track to narrow down your focus and find a long term solution. Good luck.
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