The Polspam RHSBL RBL Hard Blacklist is a restrictive, Polish-based blocklist (blacklist) that identifies domains involved in spamming activities and is intended to be used for scoring mail within a spam filter instead of outright rejection.
The Polspam RHSBL RBL Hard Blacklist is a domain-based blocklist (blacklist) that lists domain names it recognizes as being associated with spam. It is part of a larger project run by Polspam, a Polish RBL server. The primary zone for this specific list is rhsbl-h.rbl.polspam.pl.
According to Polspam's policy, this particular blacklist is considered highly restrictive. They strongly advise against using it to reject emails outright. Instead, it is designed to be used exclusively with spam filters, like SpamAssassin, to assign a score to incoming emails. A listing on this RBL (Real-time Blackhole List) increases an email's spam score, making it more likely to be filtered into the junk folder rather than being blocked completely. Rejecting mail based on this list may lead to undesirable effects, such as blocking legitimate emails.
The Polspam RHSBL RBL Hard Blacklist is operated by Polspam, which describes itself as a Polish RBL server. The project is run as a non-commercial hobby by a community of volunteers. Its stated goal is to combat spam and bad netiquette. The blacklist is not sponsored and does not generate revenue; it functions based on spam reports and data gathered from the internet community to help identify and flag spamming domains.
The delisting process for the Polspam RHSBL RBL Hard Blacklist is strict and requires complete honesty. They state that domains known for notorious or deliberate spamming will not be removed. Removals are considered mainly for one-off incidents that are believed to have been unintentional.
Before you request removal from this blocklist, you must send an email in plain text format only. Any messages containing HTML, scripts, or remote tracking objects will be ignored. Your email must include the following information:
Polspam emphasizes that you must not lie, as they will verify the domain's history. The correspondence should be treated as a domain communicating with another domain, so personal signatures are not required.
If your IP address is on the blacklist but your domain is not, it is likely due to another domain on the same shared IP address sending spam. In this case, you must contact your hosting provider. The provider needs to identify and remove the spamming domain. Once the offending domain is dealt with, the host IP address will be automatically delisted after seven days without any manual intervention.
The impact of being listed on the Polspam RHSBL RBL Hard Blacklist is generally low. This is because Polspam explicitly warns administrators not to use this specific list to block or reject emails. It is intended to be used as a scoring mechanism within a larger spam filtering system.
A listing will increase the spam score of emails sent from your domain, which raises the probability of them being delivered to the spam or junk folder. However, if mail servers are following Polspam's guidelines correctly, it should not result in your emails being bounced. The final decision on how to treat the email rests with the administrator of the receiving mail server.
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