Configuration
Step # 1: Disable Sendmail Daemon In a Listing Mode
# vi /etc/sysconfig/sendmailModify the line:DAEMON=no
Step #2: Configure Mail Submission
# vi /etc/mail/submit.cf
D{MTAHost}<smtp.mailserver.com>
Sending Emails With Sendmail
SMTP Headers File
<e.g /tmp/mail.txt>
From: "Me" <jxx_1@mail1.com>To: "jxx_1@mail1.com" <jxx_1@mail1.com>
Subject: First Email
MIME-Version: 1.0
Content-Type: text/plain
Hello, World!
.
Send Email
cat /tmp/mail.txt | sendmail -i -t
-t tells sendmail that the message contains all the information it needs to send an email, i.e. the To: and From: fields, etc. Otherwise it's going to expect you to pass them as arguments on the command line.
-i tells sendmail that we're piping the message in from a file, so it should ignore the single-period requirement and expect an EOF instead. If you don't pass this argument when piping a file, then sendmail will expect a lone period at the end of your message file.
-i tells sendmail that we're piping the message in from a file, so it should ignore the single-period requirement and expect an EOF instead. If you don't pass this argument when piping a file, then sendmail will expect a lone period at the end of your message file.
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