Hi.
We have a customer (Voyager is their ISP) who when they try and send email to a domain hosted by XTRA/Spark get a 421 code from Sparks Servers Immediately and repeatedly.
Customer is on no known blacklists.
Unsure who to contact, obviously I'm guessing business helpdesk isn't likely to know or be able to help as it's not their customer.
Does Xtra have a helpdesk for this stuff?