> Marketing will simply demand changes to the config that they do not understand and there is nothing you can do to stop it as they will have the CEO on their side.
Marketing should get their own (sub)domain for sending their missives, that way the primary corporate domain's reputation is not harmed.
Unless you want to run the risk of outgoing e-mails from Finance / Accounts Receivable to be sent to other companies' Junk folder.
It's amusing to see this advice in this thread contrasted with the recent Troy Hunt phishing attack thread where folks are complaining about companies like Microsoft having dozens of varying domain names.
Marketing should get their own (sub)domain for sending their missives, that way the primary corporate domain's reputation is not harmed.
Unless you want to run the risk of outgoing e-mails from Finance / Accounts Receivable to be sent to other companies' Junk folder.