メールシステムのおはなし #Mailerstudy23. $ dig mx hiroba.org;; QUESTION SECTION:;hiroba.org. IN MX;; ANSWER SECTION:hiroba.org. 86400 IN MX 5 alt1.aspmx.l.google.com.hiroba.org. 86400 IN MX 5 alt2.aspmx.l.google.com.hiroba.org. 86400 IN MX 10 aspmx2.googlemail.com.hiroba.org. 86400 IN MX 10 aspmx3.googlemail.com.hiroba.org. 86400 IN MX 10 aspmx4.googlemail.com.hiroba.org. 86400 IN MX 10 aspmx5.googlemail.com.hiroba.org. 86400 IN MX 1
