Your email messages are rejected by a spam filter software that is
running on the mailservers who receive the mails sent by you.
Whatīs exactly happening there ?
Your mails are sent through a mailserver which has the IP address
220.127.116.11 (there may be two mailservers involved as thereīs
another IP listed 18.104.22.168). An IP address is an unique number
that identifies the computer sending your mail (also called the
"mailserver") to all other computers on the web.
The receiving mailserver uses the service provided by
http://www.spamcop.net to prevent spam:
"SpamCop is the premier service for reporting spam. SpamCop determines
the origin of unwanted email and reports it to the relevant Internet
service providers. By reporting spam, you have a positive impact on
the problem. Reporting unsolicited email also helps feed spam
filtering systems, including, but not limited to, SpamCop's own
( http://www.spamcop.net 9
Obviously your mailserverīs IP addresses are on the spam list (also
called "black list" or blocking list (SCBL =spam cop blocking list))
of the spamcop.net service. The recipients mailserver looks up if
incoming mails have been sent by one of the servers on the black list
and rejects these mails as they are considered as spam. Thatīs why you
get the messages and why your mails do not reach the recipient.
Now, why are your mailservers on the black list of spamcop.net ?
"How the SCBL Works
The SCBL is a list of IP addresses which have transmitted reported
email to SpamCop users. The sending system can be a direct email
source (such as a site's primary mail server) or an indirect source
(such as an open proxy or open relay that has been abused to send
spam). The SCBL weights the number of reports referencing an IP
against a sample of the total amount of email sent by that IP. This
method is not perfect. For example, some IPs which send a significant
amount of reported mail may rarely or never be listed in the SCBL
because those IPs also send a lot of non-reported mail.
SpamCop uses a number of report sources, including SpamCop users,
spamtraps and websites that use the SCBL. Spamtraps are email
addresses that spammers have harvested or created, but the owner of
these email addresses never used them to receive wanted email or to
subscribe intentionally to mailing lists. SpamCop also monitors
queries from a sample of sites that use the SCBL. SCBL users query the
SCBL servers during every SMTP transaction. We count the total number
of queries for each IP address and whether or not that IP address
appears on the SCBL, to generate an estimate of how much email is
transmitted by each IP. When a sampled site queries the SCBL about an
IP address sending mail which is not reported mail, that host is given
a reputation point.
Most of the sites SpamCop monitors send either mostly reported email
or mostly non-reported email. The difficult part is deciding what to
do with ones in the middle. These few systems account for the most
Some blocking lists block mail from misconfigured or insecure servers
(such as open proxies or open relays), or from certain classes of
machines (such as machines with dynamically-assigned IP addresses).
The SCBL does not consider these characteristics. Instead, the SCBL
lists only IP addresses of machines that are sending reported email.
As a result, IP addresses which do not host a misconfigured or
insecure server, but do send reported mail, may be listed. An insecure
machine that has never been abused would not be listed.
Timeliness is key to the SCBL's value. The automated queries results
in fast listing of spam, which increases the accuracy of the SCBL.
Also, without any additional reports, a reported address stays on the
SCBL for only 48 hours. This limits the amount of damage if users make
a mistake and report legitimate mail using SpamCop."
( http://www.spamcop.net/fom-serve/cache/297.html )
Rather complicated if youīre not a web expert, isnīt it ?
What can you do now ?
First a good message:
The spamcop.net SCBL is a list that removes the blocked IP addresses
within 24 hours if there was not more spam reported within this time.
If your IP addresses should still be blocked you could try the dispute
procedure given by spamcop.net:
"How can I be de-listed? (Dispute Resolution)
We make a great effort to avoid errors and mistakes, especially on the
SpamCop Blocking List (SCBL). However, mistakes sometimes happen. When
we learn of an erroneous listing, we do our best to correct it in a
timely manner. However, the SpamCop staff receives a lot of mail.
While we want to help anyone who thinks their listing is a mistake, we
need your help and cooperation to handle requests quickly and
NO WARRANTY OR LIABILITY: BY USING THE SCBL, OR ANY INFORMATION
CONTAINED ON THE SPAMCOP WEBSITE, YOU ACKNOWLEDGE AND AGREE THAT THE
SCBL IS PROVIDED "AS IS", SPAMCOP DOES NOT GUARANTEE THE EFFECTIVENESS
OR RESULTS OF THE SCBL OR ANY OTHER SERVICE OR PRODUCT PROVIDED BY
SPAMCOP, AND ANY AND ALL WARRANTIES, IMPLIED OR OTHERWISE, ARE
EXPRESSLY EXCLUDED. IN NO EVENT SHALL SPAMCOP, OR ITS PARENT,
SUBSIDIARIES OR LICENSORS, BE LIABLE TO YOU OR ANY THIRD PARTY FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, EXEMPLARY OR CONSEQUENTIAL
DAMAGES OF ANY KIND ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF
THE SCBL OR THE SPAMCOP WEBSITE, HOWEVER CAUSED AND ON ANY THEORY OF
Please do not file an appeal asking SpamCop to remove an IP address
from the SCBL. All SCBL listings expire 24 hours from the time of the
last reported email. If reports stop and an IP address owner does
nothing else, the SCBL automatically removes the IP address within 24
Read more about how the blocking list works.
How to Alert SpamCop of an SCBL Error
To submit a possible SCBL error, follow these steps:
Please first confirm that the SCBL lists the IP address. The IP
address is NOT the same as an email address. The SCBL does not list
email addresses. To identify a specific IP address or learn what an IP
address is, talk to your network administrator or ISP. Ask your
network administrator to investigate and contact SpamCop, if
Tell us clearly and concisely why the listing is in error. Attach the
necessary supporting documentation (confirmation messages, log
entries, etc.). Include full headers, and make sure that log files are
time stamped. We can resolve an issue faster if we do not have to ask
for more information. We generally do not need information like copies
of whois records, traceroutes, etc. However, if there is a need to
show us a large file, please put it on a web server and send us the
URL for the file. Remove the file as soon as we have resolved the
Please be courteous. There is no need to threaten us with legal action
or call us names. Those things will not help us resolve a dispute more
quickly. In fact, legal threats may require that we confer with our
legal counsel, thus delaying any action we might otherwise take.
Please read all of the SCBL webpages before contacting us. It is
easier to explain the mistake in the context of what SpamCop intended
and designed the SCBL to do. If it is clear that a submitter has not
read our webpages, SpamCop will return the submission and ask the
submitter to review the documentation before writing to us again.
Please do not ask us to make exceptions to our posted policies. We
understand that not everyone likes or uses the SCBL. However, many
administrators rely on the SCBL to help them control or stop unwanted
email from reaching their users. We have described our policies and
procedures in detail, so administrators and others who want to use the
SCBL know exactly what they are getting if they choose to enable the
SCBL on their servers. Our users depend on us to always do what we say
we will do, in the manner we say we will do it. We take that
responsibility seriously, and we are glad to have our users' trust.
Because we value that trust, we do not make exceptions to our posted
policies unless there has clearly been an error.
If you received mail from SpamCop, please be certain the mail is a
notification of a SCBL listing. Not all complaints sent by SpamCop
concern an SCBL listing. In fact, some complaints (such as those that
inform one of a website or email address that appears in reported
email) should NEVER cause a SCBL listing unless the website or address
is also hosted on the same IP address that sends email.
Please do not assume that we will see a complaint or concern on a
newsgroup or mailing list. We can only address issues when we are made
aware of them directly."
I can imagine that this problem will be rather frustrating. Iīve got a
similar problem with one of my customers, his mailserver rejects my
mails from time to time.
Follow the steps given in the above procedure if the rejection of your
mails does not stop within 24 hours.
I hope this helps to solve your problem.
No search done, personal experience of the Researcher