Thanks Scott But just to be absolutely certain!
Our old mail server was set up exactly as you described. Our mail records resolved to the firewall and the firewall had rules set to forward smtp traffic to the mail server on the internal network which had an internal IP address. If I understand correctly, I will set my Imail server with an internal IP address and place it behind the firewall. I will then edit my firewall's setting so that all the IMAIL ports I need have incoming and outgoing rules applied. I will edit my DNS records so that the MX records will point to a primary host which has the IP address of the router. The router will then forward all the requests. I got to get this going on Sunday as our old mail server died this morning. Thanks again Stephen Pokora [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of R. Scott Perry Sent: 06 February 2004 16:03 To: [EMAIL PROTECTED] Subject: RE: [IMail Forum] The use of a firewall >You must forgive me my persistence but I will exhaust this until I fully >understand what to do. That's OK. :) >Your reply makes a lot of sense but a couple of items are still >confusing me. > >I already have the list of ports required by IMAIL and I used these to >setup the IP filtering under networking. The system worked fine. > >We have No NAT and the IMAIL box has its own IP address as does the >Firewall etc. > >The firewall has an option to create additional ports with rules for >incoming and outgoing traffic separately. > >The main point which confuses me is what IP address to use for the imail >server? That's up to you and the firewall to determine. Once placed behind the firewall, you may be forced to use the IP of the firewall (if it uses NAT, and only has one IP that it handles), or it may be able to have its own IP. If you type "ipconfig" from a command prompt, you should see the IP that has been given to the IMail server (which will happen automatically if you use DHCP). >Does it get an internal address or an outside address? It could be either, depending on how the firewall works. If it has an internal IP, though, the MX record should contain the IP address of the firewall. >Also, do I have to alter my DNS entry if the mail server moves behind the >firewall? Normally, that should only be necessary if both [1] the IP address of the mailserver changes, and [2] the IP address of mailserver is a private (internal) IP. -Scott --- Declude JunkMail: The advanced anti-spam solution for IMail mailservers since 2000. Declude Virus: Catches known viruses and is the leader in mailserver vulnerability detection. Find out what you've been missing: Ask for a free 30-day evaluation. --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] 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/
