Sendmail slow start problem

This is a cliché, the problem is host name resolution, but look at your own /etc/hosts, always can not see why the resolution will be a problem: 127.0.0.1 localhost localhost.localdomain192.168.12.246 Ixdba.net

This is a description, my hostname is ixdba.net

In my /etc/mail/sendmail.cf there is O DaemonPortOptions=Port=smtp, Addr=127.0. 0.1, Name=MTA

This address is 127.0.0.1, which should be related to this, rewritten as: 127.0.0.1 localhost localhost.localdomain127.0.0.1 ixdba.net still does not work, it seems that the following line is added Did not work, try the following

127.0.0.1 localhost localhost.localdomain ixdba.net

Try again, huh, the startup is over, the problem should be solved, in fact, when sendmail starts only Read the first line of /etc/hosts.