Hi all, i just installed exchange 5.5 sp 4 for the first time. but i can't send any mail to the internet, mailing wihtin my domain it's going fine. i think it's a dns problem but i'm not shure. Two nic's i have in the exchange server one for the internet and one for my network. i use the dns i get from my isp. telnet the server from my workstation is no problem. could anybody help me the error i get. The recipient name is not recognized The MTS-ID of the original message is: c=nl;a=vroomshoops;p=vroomshoops;l=CO133125-A0209230529T3NVX2AJ MSEXCH:IMS:vroomshoop:VROOMSHOOPS:CO133125-A 0 (000C05A6) Unknown Recipient thanks for you're time

I am not 100% sure but when we had an Exchange Server and wanted to mail outside, we had to make an entry at our Novell Server, mapping the inside network address of our Exchange Server to a valid outside IP address so that when mail came in, address translation at our proxy server redirected the mail to proper inside IP address. You might want to check your proxy server settings.

If you are using DNS then you need to create an MX record pointing to your Exchange server for incoming mail and an outgoing Host address to send your mail on its way.