Hey Everyone I was wondering have anyone successfully masquerade a domain. The problem is some companies I want to comes back with a 550 message not map in the DNS. There a group who handle the ISP and they register the MX record as mail.costco.com but the FQDN name is really usa.costco.local. I have made the changes in the SMTP advance setting and validate (check DNS) the information and everything looks okay. Then the server name is POSTMAN, so the FQDN name is POSTMAN.USA.COSTCO.LOCAL, can anyone advise me on what I can do? I though that masquerade the domain is suppose to handle all of that. Please advise. Thank you all.
