If OSS is an option, try Maia Mailguard. I run it over FreeBSD/Postfix, and it works extremely well.
On Mon, Aug 31, 2009 at 10:12, Leedy, Andy<ale...@butlerahs.com> wrote: > Can anyone please recommend a Anti-SPAM gateway (server based or appliance) > that contains the following functionality? > > > > 1) Greylisting > > 2) Whitelisting > > 3) LDAP integration > > 4) Quarantine SPAM email at the gateway > > 5) User interface (Web or other) where the users can release their own > messages that are not SPAM and manage their own whitelist? > > 6) Redundancy and/or Load balancing to avoid single point of failure > > > > Thanks, > > Andy Leedy > > > > ********************************************************************** > > CONFIDENTIALITY NOTICE: The information transmitted in this message is > intended only for the person or entity to which it is addressed and may > contain confidential and/or privileged material. Any review, retransmission, > dissemination or other use of this information by persons or entities other > than the intended recipient is prohibited. If you received this in error, > please contact the sender and destroy all copies of this document. Thank > you. > > Butler Animal Health Supply > > ********************************************************************** > >
