On Sep 22, 2005, at 1:42 AM, John Simpson wrote:
if you're supporting AUTH, you really should use TLS as well. otherwise you're allowing your users to send their passwords across the internet in plain text- and all it takes is one spammer with a packet sniffer to use your machine as a relay.

If you use CRAM-MD5 for the AUTH method, it's impossible to sniff the cleartext password.

TLS is a good idea, but getting your users to enable it in their clients can be a challenge. It's hard enough explaining how to enable SMTP AUTH!

Here's an idea, how about a Wiki page dedicated to instructions on setting SMTP AUTH in various email clients? People could contribute by taking screen shots of their setup, preferably with '[EMAIL PROTECTED]' or some similar username.

A more ambitious project would be to use PHP and GD with the proper fonts to automatically fill in the fields and generate a completely custom "how to" page. Any ISP could use it, and make use of hidden fields to enable/disable certain features (like 'user port 587 for outbound smtp', 'enable TLS', 'use full email address as username', 'use smtp.server.com for outbound email', etc.). The end user could enter their name, email address and email client and get a one-page printout instructing them on how to set everything up.

--
Tom Collins  -  [EMAIL PROTECTED]
QmailAdmin: http://qmailadmin.sf.net/  Vpopmail: http://vpopmail.sf.net/
You don't need a laptop to troubleshoot high-speed Internet: sniffter.com

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