Hello, Given I have these MX records: example.com. 3600 IN MX 10 m1.example.com. example.com. 3600 IN MX 10 m2.example.com. example.com. 3600 IN MX 20 m3.example.com. My question is, when m1.example.com is failed to communicate with, the remote MTA will continue to talk to m2 or m3? Thanks. -- Free SmartDNS Hosting: http://DNSbed.com/