Memo About Message Header in POSTFIX

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Message summary

E-mail messages consist of two parts:

• Message header
• Message body
• The fields of the message header are RFC2822 specified in this LINK
• Minimum header field required Date: and From: only.
• A blank line separates the message header from the message body.

Header field’s

Date:

• Represents the time when message transmission started.
• Required field.

From: / Sender: / Reply-To:

• From: Sender: Represents the author of the message and S represents the sender of the message.
• From: Is a required field.
• Sender: Fields should not be used if the author and sender of the message are the same .

In the case where these fields are used properly RFC2822, the example in which the creator of the message delegates the transmission to the secretary is given.

• Reply-To: Is what the author of the message suggests as a reply destination.

To: / Cc: / Bcc: