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Solving the Email Bounce backs after switching exchange servers
Solving the Email Bounce backs after switching exchange servers
Published: 2013/07/09
Channel: Anexeon, LLC
Sherwood hack: getting teleport address from bounce address
Sherwood hack: getting teleport address from bounce address
Published: 2008/07/18
Channel: herbivore108
BOUNCE IP ADDRESS& HIDE IP ADDRESS
BOUNCE IP ADDRESS& HIDE IP ADDRESS
Published: 2014/03/29
Channel: P Shah
proxy chaining - ip address bounce
proxy chaining - ip address bounce
Published: 2016/10/16
Channel: ng- Course
Shooters & C-Lo Speak On Slow Bounce & Address a Band Issue
Shooters & C-Lo Speak On Slow Bounce & Address a Band Issue
Published: 2009/06/19
Channel: Reggie Young
Bounce Message Help - X500 Bounce Messages
Bounce Message Help - X500 Bounce Messages
Published: 2017/09/08
Channel: Rackspace Cloud Office
How to Process Bounce Emails with the Advanced Email Verifier
How to Process Bounce Emails with the Advanced Email Verifier
Published: 2012/08/24
Channel: Dmitry Vladyko
How to Bounce Back Emails
How to Bounce Back Emails
Published: 2014/03/12
Channel: How to Block Senders in Gmail
NEW VIDEO - A Better Bounce Card 3.0 Technology
NEW VIDEO - A Better Bounce Card 3.0 Technology
Published: 2011/02/24
Channel: PeterGregg
02. No.1 - Bounce
02. No.1 - Bounce
Published: 2014/05/22
Channel: No.1
Timbaland Bounce (Step up 2 Final Battle) HQ
Timbaland Bounce (Step up 2 Final Battle) HQ
Published: 2012/01/11
Channel: ionut arny
Bounce Boys Conquer Jump Giants
Bounce Boys Conquer Jump Giants
Published: 2015/06/05
Channel: fosownage
Bounce Chicago Address
Bounce Chicago Address
Published: 2017/12/12
Channel: Matthew Kozdron
Bounce karachi
Bounce karachi
Published: 2016/05/22
Channel: safwan elahi
Vendor-Lock Autoresponder Tutorial | Bounce Accounts | Remove bad email addresses
Vendor-Lock Autoresponder Tutorial | Bounce Accounts | Remove bad email addresses
Published: 2015/12/05
Channel: Vendor-Lock Software co.
Clients - Removing Email Address From Bounce List
Clients - Removing Email Address From Bounce List
Published: 2014/09/03
Channel: LockedOnCloud
What Is The Difference Between Soft Bounce And Hard Bounce?
What Is The Difference Between Soft Bounce And Hard Bounce?
Published: 2018/02/05
Channel: HuBuCo - Email Verification
Lionaire - Bounce Back (Prod. Lionaire & Nico Chiara)
Lionaire - Bounce Back (Prod. Lionaire & Nico Chiara)
Published: 2016/12/11
Channel: Music Nation
Jumpstreet BOUNCE JUMP PLAY FUN!!
Jumpstreet BOUNCE JUMP PLAY FUN!!
Published: 2015/10/30
Channel: Family Fun Pack
Bounce  Family Funtage
Bounce Family Funtage
Published: 2015/08/26
Channel: fosownage
Class Demo  Cuddle & Bounce with web address 2015
Class Demo Cuddle & Bounce with web address 2015
Published: 2016/10/11
Channel: Saratoga Sings
DEAN T UK BOUNCE JUNE 2011
DEAN T UK BOUNCE JUNE 2011
Published: 2011/06/22
Channel: Dean Thompson DJ DEAN T
Class Demo  Cuddle & Bounce Australian voiceover w web address 2016
Class Demo Cuddle & Bounce Australian voiceover w web address 2016
Published: 2017/03/21
Channel: Kindermusik with Sunbury School of Music
How to hide or bounce your IP address
How to hide or bounce your IP address
Published: 2017/03/30
Channel: Tech Brothers
how hackers bounce your ip address around the world | No root hindi
how hackers bounce your ip address around the world | No root hindi
Published: 2017/11/27
Channel: Security broker
BOUNCE by Prosper Beauty - Product Video
BOUNCE by Prosper Beauty - Product Video
Published: 2017/08/13
Channel: Prosper Beauty
Jared Jackson - A Lover
Jared Jackson - A Lover's Bounce
Published: 2017/03/28
Channel: TheSoundYouNeed
Markets Bounce, SatoshiPay And IOTA And SegWit2X Activation - Podcast 012
Markets Bounce, SatoshiPay And IOTA And SegWit2X Activation - Podcast 012
Published: 2017/07/17
Channel: The Modern Investor
Don
Don't Disregard Your Bounce Reports
Published: 2012/09/28
Channel: Katherine Keller
Quadrocopter Bounce & Tag Following
Quadrocopter Bounce & Tag Following
Published: 2013/09/19
Channel: Angela Schoellig
Soft bounce
Soft bounce
Published: 2018/02/09
Channel: FlipMile
BOUNCE! - Sep 25, 2014
BOUNCE! - Sep 25, 2014
Published: 2014/09/26
Channel: shep689
Ding Dong Address Dissing Chi Ching Ching In New Song Genna Bounce 2017
Ding Dong Address Dissing Chi Ching Ching In New Song Genna Bounce 2017
Published: 2017/08/21
Channel: Chédele Review
@BigSean - Bounce Back - Willdabeast Adams choreography #immaBEAST
@BigSean - Bounce Back - Willdabeast Adams choreography #immaBEAST
Published: 2017/01/08
Channel: WilldaBeast Adams
WOT PODCAST with AgingJedi, Harkonnen (Daily Bounce), Sk8xtrm, JustforlolzFYI
WOT PODCAST with AgingJedi, Harkonnen (Daily Bounce), Sk8xtrm, JustforlolzFYI
Published: 2017/10/22
Channel: JustforlolzFYI
Bali - BOUNCE
Bali - BOUNCE
Published: 2017/10/17
Channel: hangovernowtv
Big Sean - Bounce Back (Audio)
Big Sean - Bounce Back (Audio)
Published: 2016/11/08
Channel: BigSeanVEVO
HOW TO GET HIGHER BOUNCE ON A TRAMPOLINE!
HOW TO GET HIGHER BOUNCE ON A TRAMPOLINE!
Published: 2017/06/06
Channel: Gavin May
Arx Return Bounce Route
Arx Return Bounce Route
Published: 2014/09/19
Channel: zombie
Me at Bounce
Me at Bounce
Published: 2014/08/13
Channel: TableTennis SMASH
How to bounce your IP across the world (Proxy Chains) and where do things go wrong
How to bounce your IP across the world (Proxy Chains) and where do things go wrong
Published: 2016/10/06
Channel: Craig Bennett II
Remove hard bounce from any email list the cheapest in the industry
Remove hard bounce from any email list the cheapest in the industry
Published: 2017/05/19
Channel: Romany F. Awad
adidas Defiant Bounce Men
adidas Defiant Bounce Men's Shoe Review
Published: 2017/04/14
Channel: Tennis Warehouse
Cape Coral Discount Bounce House Rentals Cape Coral, FL 239-205-2247
Cape Coral Discount Bounce House Rentals Cape Coral, FL 239-205-2247
Published: 2015/12/29
Channel: Daniel Matthew
Hacking Tip: Hide Your IP Address
Hacking Tip: Hide Your IP Address
Published: 2008/08/07
Channel: Tinkernut
Bounce Ville
Bounce Ville
Published: 2014/10/19
Channel: KevinWilliams
Beyoncé - Single Ladies (Put a Ring on It) (Video Version)
Beyoncé - Single Ladies (Put a Ring on It) (Video Version)
Published: 2009/10/03
Channel: beyonceVEVO
Productive Practice for your bounce games
Productive Practice for your bounce games
Published: 2017/02/01
Channel: Steve Johnston PGA
Tami Reads “Mr. Bounce” By: Roger Hargreaves
Tami Reads “Mr. Bounce” By: Roger Hargreaves
Published: 2017/03/04
Channel: Tami Dunn
Teach Me How to Super Bounce 2
Teach Me How to Super Bounce 2
Published: 2012/12/23
Channel: GeneticSpartan
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WIKIPEDIA ARTICLE

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A bounce address is an email address to which bounce messages are delivered. There are many variants of the name, none of them used universally, including return path, reverse path, envelope from, envelope sender, MAIL FROM, 5321-FROM, return address, From_, Errors-to, etc. It is not uncommon for a single document to use several of these names.

All of these names refer to the email address provided with the MAIL FROM command during the SMTP session.

Background information[edit]

Ordinarily, the bounce address is not seen by email users and, without standardization of the name, it may cause confusion.

If an email message is thought of as resembling a traditional paper letter in an envelope, then the "header fields", such as To:, From:, and Subject:, along with the body of the message are analogous to the letterhead and body of a letter - and are normally all presented and visible to the user. However, the envelope in this analogy is the contents of the MAIL FROM and RCPT TO fields from the SMTP session - and neither of these is normally visible to the user.

While it is most common for the To: and From: information in the letter to be the same as the "envelope" values, such is not always the case. For example, on electronic mailing lists, the information seen in the "From:" header will come from the person who sent the email to the list, while the bounce address will be set to that of the mailing list software, so problems delivering the mailing list messages can be handled correctly.

Only the envelope information is looked at to resolve where the email should go; the body of the email is not examined. Mail Transfer Agents (MTA) using the SMTP protocol use the RCPT TO command to determine where the email should go, and the MAIL FROM command to indicate where it came from.

Usage[edit]

While its original usage was to provide information about how to return bounce messages, since the late 1990s, other uses have come about. These typically take advantage of properties of the bounce address, such as:

  • It is given early in the SMTP session, so a message can be rejected without receiving its body.
  • It is typically not seen by users so it can be altered to include additional information without confusing them.
  • It is a required part of Mail Transfer Agent software, so it is easy for other programs to use. In contrast, the "from" address in the body of the mail can be on several different headers (e.g. the From:, Sender:, Resent-from:, etc.) or be missing entirely.

Extended uses include mailing list handling in Variable envelope return path (VERP), email authentication, spam filtering, and backscatter reduction in Bounce Address Tag Validation.

Terminology[edit]

The various terms have different origins and sometimes different meanings, although these differences have often become moot on the modern internet.

  • bounce address - When an email can not be delivered, the MTA will create a bounce message and send it to the address given by the MAIL FROM command. Used in RFC 4406.
  • return path - When the email is put in the recipient's email box, a new mail header is created with the name "Return-Path:" containing the address on the MAIL FROM command. Earlier forms of email (such as UUCP) would require information about each "hop" along the path that the email traveled to reach the destination, hence the "path" part of the name. Used in RFC 2821, RFC 3834, RFC 4409.
  • reverse path - the argument of the SMTP MAIL FROM command, whose content is supposed to consist of the envelope sender address. Used in RFC 5321, RFC 3464, RFC 3834, Internet Mail Architecture.
  • envelope from - information that the SMTP protocol uses analogous to the envelope of a letter. Used in RFC 5230, RFC 5233.
  • envelope sender address - the mailbox address in a non-empty reverse path excluding any (deprecated) reverse routing info. Used in RFC 2821, RFC 3461, RFC 3464, RFC 3798, RFC 5228.
  • envelope return address - similar to envelope sender address, used in RFC 3461, RFC 3464, RFC 3834, RFC 4952.
  • MAIL FROM - This variation comes directly from the SMTP MAIL FROM command name. Used in RFC 5321, RFC 3464, RFC 3834, RFC 4408, RFC 4409, RFC 4952.
  • 2821-FROM - Until October, 2008, SMTP was defined in RFC 2821, while the body of the email was defined in RFC 2822. The term "2821-FROM" makes it clear that the address referred to is the MAIL FROM information, while "2822-From:" refers to the address in the "From:" header seen by end users. Used in RFC 5598.
  • 5321-FROM - Evolution of 2821-FROM as from October, 2008, SMTP has been defined in RFC 5321.
  • return address - Another term that comes from the letter analogy for email. used in RFC 5321, RFC 3834.
  • From_ - When an email gets delivered to the user's email box, one file format that may be used is the mbox format. In this format, the email address from the MAIL FROM command was placed on a line beginning with "From" followed by a single space, the "From_" term uses an underscore to represent the space to distinguish it from the "From:" mail header. In this mailbox format, lines in the actual email that begin with a "From " have to be escaped and changed into lines that begin with ">From ".

See also[edit]

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