Try this: 1 All mail destined for your domain is delivered to Imail first. 2 The Imail box has an account for all mail being delivered into the domain, such as [EMAIL PROTECTED], including the mail destined for the Exchange box. 3 Each account's mail(faculty) that is destined for the Exchange server has a forward in place from the Imail account to the exchange server's equivalent account. 4 The Exchange server's account and domain are not on a real domain(though they could be). The Exchange domain is Exchangeistooexpensive.com, and the example Exchange users' address is [EMAIL PROTECTED] 5 Modify the host file on your Imail box to aim exchangeistooexpensive.com to the IP the Exchange server is on. 6 Build a connector on Exchange to route all mail sent from the Exchange server to the internet through the IMAIL box. This assures that ALL mail from your domain is delivered to the Internet through Imail, as it does an arguably better job at delivering mail than Exchange(plus you can scan outgoing with Declude still). 7 On the Exchange box, each user has two addresses. The 'Primary Address' is the real address that exists on the Imail box, and the second address is the @exchangeistooexpensive.com address. This assures that the 'reply' and 'from' address lines contain the correct info so that the person receiving mail from the fake Exchange domain still see the address of the real domain.
Mail flows like this: Incoming: mail addressed for your domain hits Imail first. If the mail is destined for an account that is on the Exchange server, it is then forwarded to the Exchange server because you have a forward on the account to the exchange domain, and Imail knows where that is because of your host file entry. Outgoing from Exchange: Mail generated on your Exchange box looks like it is sent from the Imail box because of the connector you created and because of the Primary address alias you created on the Exchange box when you made the account. Only drawback is that you have to create the 'faculty' user account on two boxes. This does work on Exg2k but I have not tested it on 5.5. -----Original Message----- From: Chris Martin [mailto:[EMAIL PROTECTED]] Sent: Sunday, August 11, 2002 6:15 AM To: [EMAIL PROTECTED] Subject: RE: [IMail Forum] Exchange 5.5 and Imail sharing a domain Sorry for the confusion. The situation is I have two different hosts that are responsible for the domain.com. Both are on public IP's but when I attempt to send from one server for delivery to an address on the other both fail. Sounds like I need something in the wins hosts file to detail their existence to each other. Any further insight that could be gleaned is appreciated! Thanks, Chris. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Sanford Whiteman Sent: Friday, August 09, 2002 6:16 PM To: Chris Martin Subject: Re: [IMail Forum] Exchange 5.5 and Imail sharing a domain > I'm wondering if anyone has any good resources for learning how to > run Exchange 5.5 and Imail on the same domain. > Fac/staff = Exchange.domain.com > Students = imail.domain.com Those aren't the same domain, but I'm guessing those are actually different hosts delivering for domain.com and you used a sort of misleading shorthand. > I have DNS records for both exchange at priority 5 and imail at 10 > but I can't seem to get both boxes to talk to each other. Why would they talk to each other? You seem to be a little off in your understanding of SMTP and MX records. If an MTA knows a domain to be local--that is, it performs local delivery to mailboxes or drop directories for that domain--it has no cause whatsoever to perform an MX lookup for the domain, unless it is specifically told that the domain has been "horizontally partitioned" across multiple physical servers. There is no RFC for this partitioning, not every MTA supports it, and those that do all perform it in different proprietary ways. IMail does it using the peering feature...but before I go on with telling you about it, look at my interpretation of your envt and RTM and let us know if I'm not barking up the wrong tree (Len, for instance, was thinking you meant something very different). -Sandy Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
