Mailing problem, Server replied: 550 "Unknown User"

[m0rdex]

Hi guys,

I've got a bit of a problem;

A company has a domain-name and hosting for it somewhere else, but we changed the DNS records of it, so now 2 subdomains of that domain-name point to my server running DirectAdmin. I created a new user, and put that domain-name in his domain-list. All is going well, the subdomains are working great.

But now it comes;

When I use my server to send mail to a user who works at that company (which has an email-address ending on the domain-name registered at my server), my server just says: "Server replied: 550 "Unknown User""...

My logic; the server first looks if the domain-name exists on my server (which is true), and then looks for the existance of the email-address. Doesn't exist, because the mail shouldn't be delivered at my server, it should be delivered at the server where they got their hosting.

What can I do about this?

Thanks in advance,
Mark Oudshoorn

 

[rohit]

all u need to do is change the IP of their mail record to point to their hosting company

so

mail A x.x.x.x

 

[Marshall]

Also, login to that domain and go to:
User Level Control Panel Area -> MX Records
and uncheck the "Use this server to handle my emails." at the bottom to make exim look outside of the local server for mail delivery.

 

[m0rdex]

Thanx!

Thank you, that did the trick!

I had disabled the "User can edit DNS records" for that user, so MX Records didn't show up in the user's interface.

Thanks a lot!

- Mark Oudshoorn