We've done this for several customers...then main problem with it is any network/power problems at their office prevent traveling users from receiving mail from the Exchange server. Other than that, as long as the server and network are properly maintained on their end, it should be fine.
Darin. ----- Original Message ----- From: "Dan Barker" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, November 18, 2004 6:58 AM Subject: RE: [IMail Forum] OT Exchange question But what about a "smart" store-and-forward server? I have all the Exchange users configured as real users on IMail (so they can use Webmail to view the spam when/if desired). No nobody alias. Since I also host the DNS for their domain, it was easy to define another (ppcsouth.local vs ppcsouth.com) zone with their Exchange in it. So, Exchange has an [EMAIL PROTECTED] or [EMAIL PROTECTED] IMail as an [EMAIL PROTECTED] with a forward to (both his Blackberry and) [EMAIL PROTECTED] AFTER the pass through SpamAssassin (http://www.visioncomm.net/sac). Ditto for all three<g> other Exchange users (sans the Blackberry). The under 1% False Negative rate for the Blackberry especially, and the 4 PPCSouth users has won me kudos out the wazoo (that's technical talk). Do you see any exposure here? I feel it's as solid as hosting them natively, yet thay have the sharer folders, access on the road (OWA), calendaring, etc. the Exchange provides while I have one, and only one SpamAssassin to manage. The old MX (mail.ppcsouth.com) is gone (as a secondary, the spammers were still hitting it directly even when the primary MX was up), but remains as a A (for OWA). But from inside my firewall, ppcsouth.local is the remote Exchange. The removed MX record DID NOT stop the spam. Either the spammers remember the MX data to avoid lookups, or they are port-scanning for 25, and using that result to try for relays, and if closed, using that SMTP for local delivery. Whatever the spammer's logic, closing the connections to their inside subnet, outside subnet, and my IMail server stopped the spam. Dan Barker -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Sanford Whiteman Sent: Wednesday, November 17, 2004 4:50 PM To: Dan Barker Subject: Re: [IMail Forum] OT Exchange question > My IMail server vets the email. . . and. . . forwards it to his > Exchange Bear in mind that you are opening yourself up to getting clobbered by mail to unknown recipients by using IMail as a "dumb" store-and-forward server. Exchange2aliases, in my sig, is a utility specifically designed to create an intelligent store-and-forward setup for IMail gateways fronting Exchange mailbox servers. --Sandy ------------------------------------ Sanford Whiteman, Chief Technologist Broadleaf Systems, a division of Cypress Integrated Systems, Inc. e-mail: [EMAIL PROTECTED] SpamAssassin plugs into Declude! http://www.mailmage.com/products/software/freeutils/SPAMC32/download/release / Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail Aliases! http://www.mailmage.com/products/software/freeutils/exchange2aliases/downloa d/release/ http://www.mailmage.com/products/software/freeutils/ldap2aliases/download/re lease/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
