Other E-mail Headers
The following header information is not displayed to you on the email program. The process of viewing this information will be slightly different, depending on the mail program being used.
Received: The header of every email message also contains Received line, which is not usually displayed by email programs, but this can be helpful in detecting a scam because it is a trace/log of the message from its origin to your mail server. It tells when the email was sent, where it came from, the route it took and where it was forwarded to before arriving to your email address, etc. It also tells the server name and IP address of the system the server received the message from.
There might me two or more Received headers. Note that we read the Received headers in reverse order, which means the first Received header is furthest down in the header and the last Received is on the top . Received line example: Received: from [18.104.22.168] by web41013.mail.yahoo.com via HTTP; Sat, 24 Apr 2008 23:13:34 EST
DomainKey-Signature: It is a cryptographic signature that tell, when checked, that the message was sent from a particular email service provider, e.g. Yahoo!.
X-Mailer: Tells what MUA (mail user agent) composed the message, for example Microsoft Outlook, Hotmail, etc.
X-MS-Has-Attach: Tells whether the e-mail has an attached document with it or not. Example: X-MS-Has-Attach: yes
X-Accept-Language: It tells the receiving server that it should use a specified language e.g. English, if it has to send an email back.Example: X-Accept-Language: en
X-UID: There's no imaginable use for this header but some spammers add one for some unknown reason.
Content-Type: It specifies the nature of the data in the message by giving type and subtype identifiers. The type/subtype can be audio, video, text or other format. It tells how MIME compliant mail programs should interpret the content of the message. For example:Content-Type: text/plain; charset="Windows-1252", Content-Type: text/plain; charset="us-ascii"
MIMI-Version: This one just specifies the version of the MIME protocol that was used by the sender.
Message-Id: A unique ID for every e-mail message, usually by the first mail server the message encounter. Any message ID without a @ sign or has an empty string is probably a forgery
While e-mail headers could be used to get basic information about the email, it can also be used to detect whether an email is a spam or not. Please check back on Bright Hub soon to get more information on e-mail headers, email header spoofing, detecting spam with the help of headers and much more.