Recently I set up Xeams to replace hmailserver. I am able to send messages but can't receive any messages from external email addresses

Everything is set up correctly as far as I can see..
If I change to open relay the emails are received but appear multiple times

I have tried repeating installations from scratch but always get the same problem

Does anybody know what this could be caused by?

Below is the returned email

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

xxx@xxx.co.uk
host xxx.xxx.co.uk [xxx.xxx.xxx.xxx]
SMTP error from remote mail server after RCPT TO:<robert@ecovation.co.uk>:
550 5.7.1 <xxx@xxx.co.uk>... Relaying denied

Reporting-MTA: dns; antispam1.spamfiltering.com

Action: failed
Final-Recipient: rfc822;xxx@xxx.co.uk
Status: 5.0.0
Remote-MTA: dns;
Diagnostic-Code: smtp; 550 5.7.1 <xxx@xxx.co.uk>... Relaying denied

Robert,

Since you're getting a relaying denied message, that indicates Xeams is not configured to accept emails for your domain. Go to Server Configuration > SMTP Configuration, select the Domain tab and ensure your domain is listed.