Why is this necessary?

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Increasingly, Internet Service Providers (ISPs) have been restricting the ways in which Email messages can be sent over their networks.  This is being done as part of their efforts to fight spam.  Many ISPs now block Email sent from computers on their networks that does not either go through one of their own mail servers or is sent in a secure method to another mail server.   Other ISPs do not actually block just messages but issue policies, that responsible mail servers are supposed to follow, which state that these messages should be rejected when recieved.  ComCast, for example, both blocks some Email messages and has a policy that messages not coming from their mail servers (smtp.comcast.net) should be rejected.  They are similar to many  other ISPs in this regards, but have a more restrictive policy than Adelphia did, which is causing some of the problems people have been experiencing.   The more general issue is that it will become harder and harder to reliably send Email from outside the WHOI network using the standard mail configurations that we have successfully used for many years. 

CIS has setup some alternative methods to send Email from outside WHOI that will work in the more restrictive environments that the ISPs are creating.  These methods use secure encryption protocols to authenticate to our mail servers and send Email from your computer to them so that it can be delivered as if you sent the message from within WHOI.  At this time even the most restrictive ISPs permit these methods.  These new methods will also work from within WHOI but you are not required to change to them to send mail either internally or externally.  The additional advantages of these methods are that, once setup, they will work internally or externally, with or without a VPN connection and will let you send to anyone (in or out of WHOI).


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Last updated April 2, 2007
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