I have recently setup MIAB successfully with inb/outbnd emails working perfectly for 4 separate domains, I have recently run into an issue when trying to use 3CX Phone Server with MIAB to send out status notifications and new user emails etc over SMTP. I use my full email address and password, tick enable ssl/tls and use my box.yourowndomain.com as the mail server address. When I use the test function in the Phone-servers interface I get a "The remote certificate is invalid according to the validation procedure.".
Can anyone assist me with resolving this issue?