Greetings,

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.

  --Dan

--

Daniel Ellis, CTO, PenTeleData

(610)826-9293

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

                                                  --Alan Kay