I need to install an assp server in front of a zimbra server.
The spam server is being run in transparent mode on the same lan as Zimbra which is the MTA in the DNS records.
When I try sending an email from an external network, I am getting;
'relay attempt blocked' and '530 Relaying not allowed' on assp and on the zimbra server,
Sep 24 10:15:06 uc postfix/smtpd: connect from unknown[192.168.1.60]
Sep 24 10:15:06 uc postfix/smtpd: lost connection after MAIL from unknown[192.168.1.60]
Sep 24 10:15:06 uc postfix/smtpd: disconnect from unknown[192.168.1.60]
My local and any other relay networks are configured in zimbra yet it won't allow from the above local server. I've searched quite a lot and have found nothing which gives me a solution so time to post here.