Re: Using external Mail Settings slows down checkout
The only purpose of newmailonlydomain.com is for authentication, so the store owners, and customers of the store, should never see it, since the only place it would ever be mentioned is in the username box for mail server authentication. It would not be used in the store admin settings, notification module "From" settings or anywhere else, so messages people receive should make no mention of it, therefore no one would ever accidentally send it an email. You don't need to worry about DNS records for it at all because it would never be used for anything and wouldn't even use DNS to connect; you'd continue using probably servername.hostingprovider.com or primarydomain.com as the mail server name, you'd just be changing the username for authentication.
It's the same as RackSpace in that you're using some other domain for authenticating, that has no relation to the primarydomain.com, but should be faster since the smtp connection would be local instead of across the internet.
The only purpose of newmailonlydomain.com is for authentication, so the store owners, and customers of the store, should never see it, since the only place it would ever be mentioned is in the username box for mail server authentication. It would not be used in the store admin settings, notification module "From" settings or anywhere else, so messages people receive should make no mention of it, therefore no one would ever accidentally send it an email. You don't need to worry about DNS records for it at all because it would never be used for anything and wouldn't even use DNS to connect; you'd continue using probably servername.hostingprovider.com or primarydomain.com as the mail server name, you'd just be changing the username for authentication.
It's the same as RackSpace in that you're using some other domain for authenticating, that has no relation to the primarydomain.com, but should be faster since the smtp connection would be local instead of across the internet.
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