X-Originating-IP
Encyclopedia
The X-Originating-IP Email header field is a de facto
standard for identifying the originating IP address
of a client connecting to a mail server.
Where xxx.xxx.xxx.xxx is, this would be an IP address
.
included an X-Originating-IP email header field that shows the IP address of the sender.
De facto
De facto is a Latin expression that means "concerning fact." In law, it often means "in practice but not necessarily ordained by law" or "in practice or actuality, but not officially established." It is commonly used in contrast to de jure when referring to matters of law, governance, or...
standard for identifying the originating IP address
IP address
An Internet Protocol address is a numerical label assigned to each device participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification and location addressing...
of a client connecting to a mail server.
Format
The general format of the field is:X-Originating-IP: [xxx.xxx.xxx.xxx]Where xxx.xxx.xxx.xxx is, this would be an IP address
IP address
An Internet Protocol address is a numerical label assigned to each device participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification and location addressing...
.
Origins
In 1999 HotmailHotmail
Windows Live Hotmail, formerly known as MSN Hotmail and commonly referred to simply as Hotmail, is a free web-based email service operated by Microsoft as part of its Windows Live group. It was founded by Sabeer Bhatia and Jack Smith and launched in July 1996 as "HoTMaiL". It was one of the first...
included an X-Originating-IP email header field that shows the IP address of the sender.
See also
- Internet privacyInternet privacyInternet privacy involves the right or mandate of personal privacy concerning the storing, repurposing, providing to third-parties, and displaying of information pertaining to oneself via the Internet. Privacy can entail both Personally Identifying Information or non-PII information such as a...
- List of proxy software
- X-Forwarded-ForX-Forwarded-ForThe X-Forwarded-For HTTP header field is a de facto standard for identifying the originating IP address of a client connecting to a web server through an HTTP proxy or load balancer. This is an HTTP request header which was introduced by the Squid caching proxy server's developers...