North American Network Operators Group

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SMTP authentication for broadband providers

  • From: Dan Ellis
  • Date: Tue Feb 10 20:45:07 2004


We’re a medium sized regional MSO/broadband provider with 200k+ mailboxes, strongly considering enabling SMTP authentication on our customer-facing SMTP mail servers.  We feel this is the next logical step to minimize our users UCE/virus impact (we already tarpit, virus scan, UCE scan, subscribe to RBL’s, reject prior to SMTP close). 



I’m looking for comments on whether this is generally seen as a positive change or a waste of time (ie – will the next virus or worm gleam your SMTP username and password from Outlook Express and use it to replicate/SPAM)?  



Is anyone aware of any well known mail clients that do not support SMTP authentication (Unix, Windows or Mac)?


Thanks in advance.




Daniel Ellis, CTO, PenTeleData



    "The only way to predict the future is to invent it."

                                                  --Alan Kay