Philip, Thanks for your off-list reply. Unfortunately I cannot reply, as your mailer is refusing connections:
$ host -t mx redfish-solutions.com redfish-solutions.com mail is handled by 10 mail.redfish-solutions.com. $ telnet -s mail4.ijs.si mail.redfish-solutions.com 25 Trying 66.232.79.143... Connected to mail.redfish-solutions.com. 554 mail.redfish-solutions.com ESMTP not accepting messages (the message is now sitting in our queue, retrying periodically) Mark