Original sentence: A few DNSBL operators will request pay (e.Some lists have unclear listing criteria and delisting may not happen automatically nor quickly.Some of the many listing/delisting policies can be found in the Comparison of DNS blacklists article.To work around this, users who wish to run their own mail server are expected to relay via their ISP's mail server using the smart host functionality built-in to most mail servers.net) or donation (e
Edited sentence: (NJABL dynablock is now obsolete.(To work around this, users who wish to run their own mail server are expected to relay via their ISP's mail server using the smart host functionality built-in to most mail servers.)Additionally, it may be tricky to get a mistakenly listed IP address removed.For example, to request removal from the DUL provided by dynablock.For example, uceprotect.Furthermore, uceprotect states on their website that any attempt at legal action for incorrectly listed netblocks will result in those netblocks remaining listed "as evidence" until the legal proceedings are concluded.In order to address this, uceprotect.Lists with unclear or costly de-listing procedures are to be scrutinized.This amounts to digital extortion and use of the Level-2 and Level-3 list in production should be avoided.net requires payment of Euro 150 (about US$225) for their "express de-listing" service.net's level-2 and level-3 lists are causing significant collateral damage by blacklisting whole netblocks based on the actions of isolated spammers.org  but that address was in turn protected by the same DUL you are asking to be removed from.org, you were supposed to send an email to removals at mail