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Because of its limitations, the majority of each code delivery report may indicate several other error conditions as well as different mail server using their own text description
like;
550 Requested actions not taken. Not a gateway.
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Relaying prohibited, not local host. This address not allowed. Mailbox unavailable,
etc. Usually refers to
HB or
SB
(hard or soft bounce)--are
absolutely inaccurate.
HB
or
SB
501, 502, 503 etc. |
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Indicates non-existing users
or mailbox full, busy, down, network busy, etc.--are totally inaccurate because
recipients mail servers or email clients
filtering device can bounce and stimulate non-existing recipients as well as
includes other error conditions. |
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Filtering programs are also available for users to auto delete and
return mails as undeliverable (stimulated) as HB,
therefore, bounced mails may not necessarily means that recipients are
non-existence.
These powerful programs
also allows *wildcard filtering for the: Subject
line, TO, FROM, email domain and message body,
available free-to-try from
mailwasher.net
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If you are using your own mail server program and
seems to be getting a lot undeliverable or bounced mails--which can usually be
avoided...
See: Mail Server
FAQsIs it necessary
to clean
up my list
of undelivered (bounced) emails?
Maintaining a clean
list is important and it is necessary to remove undelivered (bounced) emails
from your database, |
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because many ISP mail
servers have been known to block a sender
email domain for repeatedly sending emails to non-existing domain
address within their mail server.
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Spammers are know
to use software that generate random email addresses for spamming
and don't bother to remove bounced or undelivered mails, hence, ISPs assumed
that the sender is trying to spam--which may result in having your email
domain blocked or blacklisted by
ISP's.
It is quite problematic to resolve the matter (block/blacklist) and the only remaining
choice is to register a new email domain or use another email domain to broadcast
your mails... See: Blacklist
For more info about bounced mail...
See:
Manage, clean bounced and
undelivered emails?
Useful sites to locate new
ISPs:
-
www.emailaddresses.com
-
www.isps.com
-
www.thelist.com
-
www.findanisp.com
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100%
effective.
I recommend it.
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An easy way
to
stop spam
getting
into your PC
Free
2-Try |
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"A
valued contribution
that
I and the rest of
my team sincerely appreciate it. We have checked your software
twice and it is good." Alex
webmaster@softpicks.net |
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