I'm trying to use our C100 as an enterprise Gateway, according to the manual this will allow our system to receive and route email to our groupware server. Also it will receive SMTP messages from our groupware server and route it to the internet.
During setup I configured the system to receive email for our domain and relay email from our domain. To relay email I used the server's IP addreses, since its a cluster. I added all the ips on the server. I've seen in logs of a barracuda our server sending messages with any of the ips, instead of using the one that represents the virtual smtp.
Incoming Email arrives without problems, but if I try to route mail thru the ironport the smtp connection is dropped.
The internal server is listed in the relay senders group.
I understand from reading the manual that I don't have to add or enable the Incoming Relays in IP Interfaces?
If I telnet from the mail server to the ironport I don't see a banner and as soon as I type a single letter the connection is dropped.
Between the ironport and the mail server is a firewall, there is a rule that allows communication to the ironport. The rule allows me to route mail to a barracuda. That makes me think its not the firewall but I'm not a 100% certain.
I apologize if there are any grammar errors or any other mistakes, english is not my native language.
I opened a ticked with support, they are looking at the configuration file.
But I also wanted to post here just in case someone could give some hints.
Thanks in advance for any help provided.