PHP mail detailed solution to email sending Problems

We are using

The complications of sending mail via PHP mail are as follows: the sendmail service starts slowly.

View sendmail logs

/Var/log/maillog

The hostname is incorrect.

First, compare the two files

/Etc/hosts

/Etc/mail/local-hosts-name

Make sure that the hostname is correct.

The method for viewing and changing the host hostname is hostname [newhostname: string].

Edit/etc/mail/sendmail. cf

Find the Dj $ w Line, and the vi SEARCH Command is/string

The display status is commented out. Add a line here.

Dj $ w.

Set

/Etc/init. d/sendmail restart

Fast restart

The above is a solution to the slow speed of sending mails by PHP mail.