I don’t know enough about this to ask the question very well. When I send a message from me@yahoo.com to me@mynotesdomain.com, is there a piece of Domino that associates the correct IP address internet email uses to find my Domino SMTP server to “mynotesdomain.com”? Does that make sense? My network admin is trying to set up a new MX record with our provider, and he asked me to show him how Domino associates our external IP address with our FQDN.
Subject: Inbound Internet Mail Routing
For the MX record, you should use the public IP address of the Domino server, and use NAT in your firewall to route the traffic to that IP through to the server on the internal segment.your internal FQDN shouldn’t be an issue if DNS is configured correctly for internal and external use.
HTH
Subject: RE: Inbound Internet Mail Routing
As Alan has said, the first thing you need to check is if the Domino server is inside the firewall or outside, possibly in the DMZ.
If it is inside the firewall, then the network guys will need to create a NAT entry to translate the enternally facing IP Address for port 25 to the ip address of your internal server.
If it is outside the firewall, and accessible to the outside world, then you need to provide the IP address of the server for the MX record.
HTH
Geoff Poole
Subject: RE: Inbound Internet Mail Routing
The Domino server doesn’t really notice the route through which the mail is delivered, if another server connects to try and deliver SMTP mail and the SMTP listener is turned on, the server will receive the message, pending any restrictions you may have in place and a valid To address. I highly recommend using some of the SMTP security features, such disabling relays and enabling reverse DNS lookups to help with spam issues, not to mention a third party antivirus and/or antispam software on top of that.
A quick word about using a Cisco PIX firewall to route mail. There is a bug in the IOS that can randomly corrupt inbound attachments if you configure the router table on the PIX to route port 25 to a specific IP address and specify that the destination is an SMTP server. If you do not specifiy that the destination is an SMTP server the random problems do not occur. I just mention this because it took us over 6 months to troubleshoot this exact problem a couple of years ago and I hope that no one else has to go through it like we did.
Subject: Inbound Internet Mail Routing
In a typical domino inbound routing, inbound mails first hit the corporate firewal or anykind of antispam boxes( like symantec,cypher trust,trendmicro) which sitson a public ip.
Then a relay host sit between your corporate firewall and domino server exchange mails, the relay host mostly a unix send mail or anyother relay host, you have the mx record configured on this relay hosts which will have fqdn ( ofcourse
each and every servers now mostly have a fqdn.
Then you have smtp listener running on your domino system and a connection document to the relay host.
Hope this is a lil info for you !!
Kripakaran
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