Email Report: Email Bounce Analysis

The bounce descriptions used in the Email Bounce Analysis Report are derived from those supplied by BoogieTool.com®; Reward's third party partner, which actually performs the bounce analysis. The tool used to process the bounces is called BoogiePOP Advantage™.

This table contains definitions for the various terms used in the bounce analysis report.

Activity Type Description Examples
Auto Reply (AR)

An automatic response from the recipient.

Out Of Office”,

Vacation Message

Bounce With No Email Address (BN)

BoogiePOP Advantage (the tool used by Reward's third party partner, which performs the bounce analysis) determined that the message was a bounce, but it could not resolve the original email recipient email address. Rare.

Challenge-Response Message (CR)

A Challenge-Response message is an automatic response from the recipient, requesting that the sender confirm that a real person is sending the message. Generally, confirmation is completed manually by clicking on a hyperlink within the Challenge-Response message itself.

Feedback Loop Report

A feedback loop is a system by which the ISP provides the sender a copy of a message that a subscriber has reported as spam – usually by hitting a "Report Spam" button.

General Bounce (GB)

The email server could not deliver your email message, but the bounce message was unclear as to what kind of bounce it was. Most BoogiePOP Advantage users treat these as soft bounces.

Subject: Undeliverable mail

Hard Bounce (HB)

The email server could not deliver your email message.

550 User Unknown

Mail Block - General (MB)

Indicates that the recipient’s email server is blocking email from your email server.

550 Message REFUSED by peer

Mail Block - Known Spammer (MBKS)

Indicates that the recipient’s email server is blocking the email from your email server because it believes you are a known spammer.

REJECT Known SPAM source

Mail Block - Spam Detected (MBSD)

Indicates that the recipient’s email server is blocking email from your email server because the message seems to have content that looks like spam.

550 Possible spam detected

Mail Block - Attachment Detected (MBAD)

Indicates that the recipient’s email server is blocking email from your email server because the email message contained an attachment.

552 Disapproved attachment

Mail Block - Relay Denied (MBRD)

Indicates that the recipient’s email server is blocking email from your email server.

551 relaying denied
Non Bounce (NB)

BoogiePOP Advantage determined that the message was not a bounce. This could be a recipient reply, or might be a bounce format that BoogiePOP Advantage did not recognize.

Soft Bounce - General (SB)

The email server is temporarily unable to deliver your message to the recipient email address.

Connection timed out

Soft Bounce - DNS Failure (SBDF)

The email server is temporarily unable to deliver your message to the recipient email address because of a DNS problem.

Host is unreachable

Soft Bounce - Mailbox Full (SBMF)

The email server is temporarily unable to deliver your message to the recipient email address because the recipient’s email box is full.

Mailbox over quota

Soft Bounce - Message Size Too Large (SBMS)

The email server could not deliver your message to the recipient because the message size is too large.

"Exceeded maximum inbound message size

Subscribe Request (SR)

Someone is requesting to be added to your opt-in email list. BoogiePOP Advantage looks for subscribe requests in the subject header of the email message, and on the first line of a text based email message.

Transient Bounce (TB)

The email server temporarily can not deliver your message, but it is still trying.

Warning: message still undelivered after 4 hours. Will keep trying until message is two days old

Unsubscribe Request (UR)

Recipient is requesting to be removed from future email from you. BoogiePOP Advantage looks for unsubscribe and remove requests in the subject header of the email message, and on the first line of a text based email message.