Office 365 EO connector "Length of the property is too long"

We are trying to set up tls in Office 365 connector and i have gotten a list with 120 domains that we need to add to this list in the send/receive connector in the Exchange Online panel.

They already have 5 other domains in this list but are adding more.

I tried to all all of them via the gui(is there a powershell command to do this?), it takes a while since i can only copy/paste one domain at once and click ok, then add and do the same for all the domains.

The problem came when i pressed save or ok i got the error "Length of the property is too long".

From what i can read in this post: https://support.microsoft.com/te-in/help/4014351/length-of-the-property-is-too-long-error-when-you-add-sender-domains-t

Can i just add another connector with the same name(2) and the same settings and carry on with the domain list?