Some email servers may require the KS Relay to whitelisted, our current address is:
Only select users have access to the KS relay. If you need access to this service please contact firstname.lastname@example.org and request it.
As some companies require information to be hosted in the UK, our corporate and local email server sends from the following IP:
But all KS E-mail systems should have the correct SPF, DKIM and DMARC records setup. If you discover something wrong with our records, please report this to email@example.com