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Are Cloud Servers Bad for Sending Email?

Monday, May 2nd, 2011

Public cloud servers are great for many things; however, sending email is not one of them.

Why Cloud Servers are Bad for Sending Email

The IP address spaces used by the major public cloud vendors (i.e. Amazon, Rackspace, etc.) for their cloud servers are well known and are generally black- or gray-listed by anti-spam systems. Additionally, many of the IP addresses in use by these systems are already “polluted” from previous abusive use by spammers.  When you set up a new cloud server, you could be easily assigned a “bad IP”.  Even if you do not inherit a bad IP reputation from the previous user(s) of your new IP, your server is still in the general set of IP addresses of the cloud and thus considered a possible spam source.

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