It has been two years of time to contact the mail server. I have always used qmail, and now I have contacted Sendmail. I always thought it was very familiar with the mail server.
But now I found it. I have made a mistake that I don't want to understand. Many things seem to be instead, knowing, but I don't know how it is.
The principle level is too little. . . Learn nothing! ! !
One word: sweat! !
A better point is that I finally retrieve the driving force and passion of learning. It has been a bit numb that it is a bit numb, and it is awkward. It's finally better. :)
