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Bounce Processing Descriptions
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Auto Reply (AR): An
automatic response from the
recipient.
Examples: "Out Of Office",
"Vacation Message"
Bounce With No Email Address
(BN): eList Manager
determined that the message was
a bounce, but it could not
resolve the original email
recipient email address. Rare.
Challenge-Response Message
(CR): Challenge-Response
email systems were created as a
reaction to the increasing
circulation of spam. Dubbed as a
100% effective solution to
stopping spam from ever reaching
users' inboxes,
Challenge-Response systems like
EarthLink SpamBlocker and
SpamArrest, among others,
require human intervention for
an email message to reach its
intended recipient.
In short, a Challenge-Response
message is an automatic response
from the recipient, requesting
that the sender confirm a real
person is sending the message.
Generally, confirmation is
completed manually by clicking
on a hyperlink within the
Challenge-Response message
itself.
When eList Manager determines a
message is a Challenge-Response
type message, the email address
that is returned is the FROM:
email address of the system, or
person, sending the
Challenge-Response message to
you. It's been our experience
that the original email address
of the recipient does not appear
within the Challenge-Response
message, thus there is no way to
retrieve the original email
address. You'll be handling
these types of messages
manually, because that's what
they're designed for, so it
should be okay that the original
email address isn't returned.
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
eList Manager users treat these
as
soft bounces.
Example: "Subject:
Undeliverable mail"
Hard Bounce (HB): The
email server could not deliver
your email message.
Example: "550 User Unknown"
Mail Block - General (MB): Indicates
that the recipient's email
server is blocking email from
your email server.
Example: "550 Message REFUSED
by peer"
Mail Block - Known Spammer (MBKS): Indicates
that the recipient's email
server is blocking email from
your email server because it
believes you are a known
spammer.
Example: "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 appears to have content
that looks like spam.
Example: "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.
Example: "552 Disapproved
attachment"
Mail Block - Relay Denied (MBRD): Indicates
that the recipient's email
server is blocking email from
your email server.
Example: "551 relaying denied"
Non Bounce (NB): eList
Manager determined that the
message was not a bounce. This
could be a recipient reply, or
maybe a bounce format that eList
Manager did not recognize.
Soft Bounce - General (SB): The
email server is temporarily
unable to deliver your message
to the recipient email address.
Example: "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.
Example: "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.
Example: "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.
Example: "Exceeded maximum
inbound message size"
Subscribe Request (SR): Someone
is requesting to be added to
your opt-in email list. eList
Manager looks for subscribe
requests in the subject header
of the email message, and on the
first line of a text based email
message. eList Manager parses
for subscribe requests in
several different 7-bit ascii
langauges. (ie. English,
Spanish, French, German, etc.)
Transient Bounce (TB): The
email server temporarily can not
deliver your message, but it is
still trying.
Examples: "Warning: message
still undelivered after 4
hours. Will keep trying until
message is 2 days old"
Unsubscribe Request (UR): Recipient
is requesting to be removed from
future email from you. eList
Manager looks for
unsubscribe/remove requests in
the subject header of the email
message, and on the first line
of a text based email message.
eList Manager parses for
unsubscribe requests in several
different 7-bit ascii langauges.
(ie. English, Spanish, French,
German, etc.)