We will move your server into a brand new, state-of-the-art data center so it has been necessary to change the main IP address of your server from 18.104.22.168 to 22.214.171.124.
We will point A record of mail01.pacifichost.com to 126.96.36.199. Your email should work from new MX server having same hostname as mail01.pacifichost.com.
We apologise for the short notice of this change, but it was imperative that this was done quickly to resolve the current networking issues.
We will do this switch on 1st November 2017 around 4 AM Pacific time.
Thank you in advance for your patience and understanding.
Pacifichost Webhosting System Administrator Team