Smtp command mail from

The MAIL FROM command!

In SMTP (Simple Mail Transfer Protocol), the MAIL FROM command is used to specify the sender's email address. It's one of the most important commands in the SMTP protocol, as it identifies the sender of the email message.

The syntax for the MAIL FROM command is:

MAIL FROM:<[email protected]>

Where <[email protected]> is the email address of the sender.

Here's a breakdown of the command:

• MAIL FROM: This is the command itself, which specifies the sender's email address.
• <[email protected]>: This is the email address of the sender, which is enclosed in angle brackets (< and >).

When a mail user agent (MUA) or a mail transfer agent (MTA) sends an email message, it typically starts by sending a MAIL FROM command to the remote SMTP server, specifying the sender's email address. The remote SMTP server then uses this information to verify the sender's identity and authenticate the email message.

For example, if you're using a mail client like Microsoft Outlook to send an email to [email protected], the mail client would send the following command to the remote SMTP server:

MAIL FROM:<[email protected]>

This tells the remote SMTP server that the email message is being sent by [email protected].

The MAIL FROM command is an essential part of the SMTP protocol, as it allows email messages to be properly routed and delivered to their intended recipients.