[EMAIL PROTECTED] wrote on 08/09/2006 08:43:19 AM: > List, > > I have been asked to investigate setting up a solution to allow only certain > senders... to email only certain recipients, with any non-approved > sender/recipient messages being rejected. It sounds like the company wants > to look into a "deny-all except that which is specifically allowed" > framework for email.
That sounds like a nightmare to manage!! > Has anyone ever set up something like this? What database types were used > to contain the lookup tables for valid sender/recipient pairs? What kind of > performance hits were encountered? And I assume "stream by recipient" was > needed to allow a message to be passed to an allowed user, yet not passed to > a disallowed recipient. What kinds of problems did that create (aside from > the obvious "one message cc'd to 10 people in becomes 10 messages out" kind > of scenario)? > > David - Is this a feature available in the Can-It products? As a CanIt Pro user, it would be possible, at least for the recipients that you want to control being internal users. Set up a stream for each internal user. >From the manual: 5.1.1 Holding Unlisted Senders CanIt-PRO can allow you to decide to only accept mail from a specific list of sender addresses, and to hold mail from all others. This essentially gives you the benefits of a challenge-response or sender opt-in system without requiring that senders perform any extra additional actions before sending you a message. To use this feature: 1. Go to Rules : Senders and add the addresses of people you wish to receive mail from as Always allow. 2. Enable the Hold mail from any sender not listed in Senders Table setting under Preferences : Stream Settings. Messages from the addresses you whitelisted will be allowed, and all messages from senders not specifically listed in the Sender Action Table will be held in your Pending trap, even if they score below your spam threshold. _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list MIMEDefang@lists.roaringpenguin.com http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
