External Mail - Urgent!
Thanks! All done! J Lachance
December 1st, 2011 7:01pm

Hello, I have set up an exchange server at my organization as a trial to see if we want to run a windows environment or linux. Right now, everything works, we got a static IP and a reverse hostname from the ISP. I have no problems sending and receiving emails within the organization internally. I can also receive emails from an external domain no problem but when it comes to sending emails to an external email like gmail or any other domain, the email stays in the queue and I get the message : Remote server did not respond to a connection attempt. I ran the tool SMTPDIAG and everything is fine. DNS, etc. Google mx server answers to port 25 (my ISP is not blocking it). My question is, do I have to really setup a connector for email to go through? There's no firewall, the server is in the DMZ (testing purposes until I get that fixed up). I put up a connecter using a smart host before to send emails and it worked fine but the service is limited to 25 outgoing emails only which is crazy. If I setup a connector with the DNS option is still doesnt work. Emails get stuck in queue. I have no outbound security settings everything is fine and the only thing I see that could maybe fix it is if I had my ISP smtp server as a relay but then wouldnt it change the emails header to my ISP's email account? And another thing, my exchange server is set to "All unassigned ips" which is only 1 IP, the internal one. Not the ip we use for the internet. If I had the external static IP to the NIC, I get an IP collision error because the router is actually the one using the external IP. But anyhow the exchange server is in DMZ so everything is fine but the sending external mail. Can this be a problem in exchange that it is set to the internal ip? Anyways, I appreciate the help if you can answer me on this! I did my cours 3 years ago but it was only projects we did internally! :) Thanks a bunch! J Lachance
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December 1st, 2011 7:57pm

Hi, 1) Assign a public ip to your exchange on router and NAT it with internal ip. 2) Configure SMTP connector and choose "*" in Address space. 3) In Network option route you email through Dns ' MX. 4) Make sure port number 25 is opened at router. This way you will be able to send /relay email on internet. Thanks Amit
December 2nd, 2011 8:45am

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