Simple SMTP Auth Solution?

[Adrian Hunt <ahunt7616 yahoo com>]

Hi All,

We are relatively happy running Sendmail at our site,
but we despirately need an SMTP solution which lets
our customers send mail from anywhere without using a
completely open mail relay.

Ideally, we'd like to find a very simple server which
we can bind to a single IP address, use /etc/shadow to
authenticate SMTP users without interfering with our
exisiting SMTP/mail delivery setup.

I've looked into a lot of "complete" mail solutions
which include SMTP + Auth, IMAP, POP, etc. and not
only have I not been unsuccessful in getting any of
these to work, but they're far more complicated than
what we need.  Is there anything out there that's
simple enough to just do authenticated relay?

Alternatively, if there were a way to setup email
aliases for multiple domains on a single IP address
with another mail server which includes SMTP Auth, I'd
be interested in trying that.

BTW, I have tried the Sendmail 8.10 RPM's in contrib,
but they have dependencies which I cannot find.

TIA!

Adrian

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