I'm not normally a Linux server guy: I'm a .NET programmer. However, I inherited a situation where there's a website hosted on a Linux server using Postfix on Webmin. They have several aliases set up, but none to external email addresses.
I tried setting one up as a test. I set up testing to forward test to validemailaddress@domain2.com. Then I sent an email from another email address to test@domain1.com and got the following back:
MailEnable: Message could not be delivered to some recipients. The following recipient(s) could not be reached:
Recipient: [SMTP:test@domain1.com]
Reason: Remote SMTP Server Returned: 550 No Such User Here"
Now, if I change the address to "root", I don't get any messages back but I don't know where the email ends up; again, this is someone else's VPS and it's about as confusing as it gets. Is there a spot within Postfix on Webmin to allow for sending to external domains, and if so, where do I look for it? Thanks.