>1.) Reliable, dependable SMTP Authentication
>
>2.) Ability to hook into the RBL for relay control
>
>3.) Ability to control the timing and quantities of relayed mail
2. and 3. are handled wonderfully by my IMGate project, which uses postfix
on FreeBSD as a front-end for Imail, as an anti-spam defense just about
every which way possible, fully configurable.
postfix, an IBM public software product by Wietse Venema, also supports
full RegEx filtering of headers for global filtering before relaying to
Imail, where domain level filtering can be implemented.
postfix also can off-load ETRN traffic from Imail, with no polling while on
hold (still needs a remote fixed ip address, tho').
postfix also has "delivery rate controls" because postfix is a high-volume
multi-threaded transfer SMTP client that appear to be a "thundering herd"
to a overwhelmable SMTP server.
And of course postfix can deliver all outbound traffic relayed from Imail
at highspeed, freeing Imail to concentrate on POP3, IMAP, LDAP, dial-up
clients, and web messaging clients. We are finding the Imail + IMGate
combo to be extremely effective combination, esp when IMGate is completely
free (old P200 + free software).
The IMGate website isn't up yet, but you can join the list here:
mailto:[EMAIL PROTECTED]?subject=subscribe%20IMGate
For late joiners, I'll send the previous msgs and FreeBSD + postfix
instructions.
Len
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