I would like to configure an alternate relay for my host only when sending email to outlook.com, live.com and hotmail.com due to Microsoft blocking other hosts in my ip range. I am able to setup relay via mailjet.com for all senders for all hosted domains for all oubound mail, but I only wish to use the mailjet relay for microsoft bound emails for all senders on all domains hosted on my server.
But that is the way to do it.
I found this documentation on Mailjets website, but it also says that those docs are deprecated. Not sure how to do it if the API is needed instead.