Changed MX check to respect priorities other than 10.
Changed MX check to respect priorities other than 10.

Reordered the if a little, added some string parsing, and modified the
OK text to include a warning.

nstanke/mailinabox,b-deng/mailinabox,Neopallium/mailinabox,d5ve/mailinabox,jprice/mailinabox,brocktice/mailinabox,b-deng/mailinabox,ianberinger/mailinabox,brocktice/mailinabox,m4rcs/mailinabox,choltha/mailinabox,choltha/mailinabox,jjz/mailinabox,ianberinger/mailinabox,pierreozoux/mailinabox,mail-in-a-box/mailinabox,jjz/mailinabox,jjz/mailinabox,Toilal/mailinabox,jmedding/mailinabox,mboersma/mailinabox,d5ve/mailinabox,jprice/mailinabox,jmedding/mailinabox,brocktice/mailinabox,PortableTech/mailinabox,b-deng/mailinabox,mail-in-a-box/mailinabox,jprice/mailinabox,jmedding/mailinabox,jprice/mailinabox,Neopallium/mailinabox,nstanke/mailinabox,Toilal/mailinabox,brocktice/mailinabox,choltha/mailinabox,nstanke/mailinabox,m4rcs/mailinabox,PortableTech/mailinabox,Neopallium/mailinabox,d5ve/mailinabox,mail-in-a-box/mailinabox,Neopallium/mailinabox,PortableTech/mailinabox,b-deng/mailinabox,nstanke/mailinabox,m4rcs/mailinabox,m4rcs/mailinabox,hnk/mailinabox,pierreozoux/mailinabox,ianberinger/mailinabox,nstanke/mailinabox,hnk/mailinabox,jmedding/mailinabox,jprice/mailinabox,m4rcs/mailinabox,mboersma/mailinabox,brocktice/mailinabox,Toilal/mailinabox,mail-in-a-box/mailinabox,ianberinger/mailinabox,mboersma/mailinabox,d5ve/mailinabox,mboersma/mailinabox,jmedding/mailinabox,d5ve/mailinabox,mboersma/mailinabox,hnk/mailinabox,hnk/mailinabox,choltha/mailinabox,pierreozoux/mailinabox,PortableTech/mailinabox,pierreozoux/mailinabox,Neopallium/mailinabox,ianberinger/mailinabox,choltha/mailinabox,b-deng/mailinabox,PortableTech/mailinabox,Toilal/mailinabox,jjz/mailinabox,pierreozoux/mailinabox,jjz/mailinabox