test/stdout/4802

   1 foo@mx-sec-a-aa.test.ex
   2   router = dnslookup, transport = smtp
   3   host a-aa.test.ex [V4NET.0.0.100] MX=5
   4 foo@mx-aa-a-sec.test.ex
   5   router = dnslookup, transport = smtp
   6   host a-sec.test.ex [V4NET.0.0.100] MX=5