[Chapter-delegates] (no subject)

[Franck Martin]

There are only a few good public DNSBL. The best one, I think personally, is the aggregator from spamhaus zen.spamhaus.org. There are one or two more you should consider, and the others are not worth the DNS query for a production mailserver but still interesting as a data point..

There are IETF documents about DNSBL:
http://tools.ietf.org/html/rfc6471
http://tools.ietf.org/html/rfc5782

This will help you in choosing which service is best for your mail server.

Getting delisted is sometimes difficult, but it always start by following the process published by the person doing the block. If no process is found, then write to support or postmaster.

Be courteous, and ask for more information on the reason of the block and what do you need to do to be removed.

The important part to remember:

"getting an email delivered to someone mailbox is a privilege not a right"

once you understand that, you will be more privileged.

PS: I don't think barracuda runs a racket, because many people do not use their solution and have no issue sending to barracuda customers, however like any system, it has its shortcomings.