nanog mailing list archives

Re: Why do so few mail providers support Port 587?


From: Valdis.Kletnieks () vt edu
Date: Fri, 25 Feb 2005 14:04:11 -0500

On Fri, 25 Feb 2005 12:56:50 EST, andrew2 () one net said:

Sorry, I misread that.  But I still fail to see how 587 changes that.
Trojans, viruses, etc. etc. etc. can still exploit the authentication
system regardless of what port it operates on.  Different port, same old
problems.

It changes it only in that it becomes a *lot* easier for you to track down
which of your users has a compromised machine. (It's a lot easier to just look
at the Received: headers than have to take the hostname, chase it back through
your logs, and all that - especially if the user is roaming and just caught
something over their Aunt Tilly's unsecured wireless access point....)

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