Hi, Only two methods I have implemented.
1) "OPEN SMTP RELAY" - No
2) "SMTP AFTER POP" - The client need to check his mail first and for a set amount of time he can send mail through that same server.
3) The best solution though would be "SMTP AFTER AUTH". Setup a seperate smtp server which allows any user to relay mail after authenticating himself. I have done this using POSTFIX+SASL+MYSQL. Quite robust can handle tons of mails.
From: Wayne Pascoe <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Authenticated SMTP Date: Tue, 9 Sep 2003 15:48:22 +0100
I need to provide an SMTP service to someone who travels around thie world. I can't do this with a specific IP address, as they use a variety of ISP's in different locations.
To this end, I'd like to setup authenticated SMTP, preferably using postfix.
I've had a look in the postfix faq and it was a bit vague on this point. In merely said that you need to force the user to authenticate against a pop server first, that maintains a postfix compatible access table.
Can anyone point me to a document that explains what pop servers might be suitable for this task and how to go about setting up this authentication ?
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