> I need to relay people who connect with dynamic IPs, Is the any way of
relaying
> them?

There are two popular methods:

SMTP-after-POP (or SMTP-after-IMAP) requires a user to log into the POP (or
IMAP) server and check his/her email.  Afterwards, that user will be allowed
to relay from that particular IP address for a certain amount of time.

ESMTP AUTH is an additional SMTP command that enables email servers to
require authentication before a user is allowed to relay.

There are qmail patches for both methods.  Look around for them at
www.qmail.com.

---Kris Kelley

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