Dave,
Ipswitch won't allow for gatewaying except on IMail Small Business or IMail Professional. If you or anyone else is interested in just a simple backup gateway, I've got a server that does address validation that is severely underutilized (hardly ever reaches 1% CPU utilization on minute to minute averages). I set this up partly with the idea in mind that I would provide a cheap backup gateway for other admins. This isn't designed to be a big profit center for me and it should be significantly less expensive than buying the software and hardware for yourself, and it provides a redundant network for those that don't already have one.
If you prefer to do this yourself, I use MS SMTP with VAMSoft ORF to pull this off (Sandy originally recommended this many months ago). MS SMTP allows you to customize the settings for each instance, and ORF will do envelope rejection of individual RCPT To's to stave off dictionary attacks without hardly any CPU or bandwidth overhead. I do plan on doing some very limited blocking on the server for things like dictionary attack IP's and are safe to block, with the data generated from the logging of multiple rejected recipients in a specific pattern, and expired after a period of inactivity. We will import addresses in the IMailUsers export format with one address per line, and a process that monitors drop directories for new files and updates the gateways when found. I actually run ORF on my IMail server also so that I can do envelope rejection for gatewayed domains.
Maybe this isn't exactly what you are looking for, but I figured that I would put it out there for you and others to chew on.
Matt
Dave Doherty wrote:
Sandy-
Do you know what Ipswitch's position is on licensing the gateway server? It looks like the small business version is limited to five domains, but is that domains with mailboxes only? Will the SB version do OK with several hundred domains when acting only as a gateway? Or do we need to pay the full price for the pro version all over again to set up a gateway?
-d
----- Original Message ----- From: "Sanford Whiteman" <[EMAIL PROTECTED]>
To: "Mike Wiegers" <[EMAIL PROTECTED]>
Sent: Tuesday, October 12, 2004 3:33 PM
Subject: Re: [OT] RE: [Declude.JunkMail] 6.3 Acting as a gateway for domains on other servers
I have setup the gateway in my hosts file and the MX records for that gateway is pointing to my declude server. It looks like what you are saying is my server will try to process every non-user to the gateway machine, correct??
Yes.
Does this script create registry keys for the gateway users, or how does this work?
It creates and updates IMail aliases for a remote userbase retrieved over LDAP. You just schedule it to run every 5-10 minutes.
--Sandy
------------------------------------ Sanford Whiteman, Chief Technologist Broadleaf Systems, a division of Cypress Integrated Systems, Inc. e-mail: [EMAIL PROTECTED]
SpamAssassin plugs into Declude!
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Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail Aliases!
http://www.mailmage.com/products/software/freeutils/exchange2aliases/download/release/
http://www.mailmage.com/products/software/freeutils/ldap2aliases/download/release/
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