.NET Mailserver smtp/relay problem

Posted by Quandary on Server Fault See other posts from Server Fault or by Quandary
Published on 2010-06-05T18:16:20Z Indexed on 2010/06/05 18:23 UTC
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Question, I'm trying to setup my own mailserver:

This is the server (latest version): http://www.codeproject.com/KB/vista/SMTP_POP3_IMAP_server.aspx

Now I've the following problem: I can add user accounts, and receive mails from the internet in that account. I can also setup a mailinglist. This works fine (for local users).

But I can't send any emails out... Why ? I've forwarded port 25 + 110, and it works fine for receiving mails from the internet.

Do I need to configure SMTP under SMTP, or under relay, or both ? Or do I miss anything ?

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