Hi,

I was using 3 Block Lists for some months now - Spamhaus Zen, Spamcop, PSBL.

It got to the point that was very fustrating when many clients were regularly telling me that their emails from their senders were not going through.

After these complains, I found out the the most "unreliable" DNSBLs among my list are PSBL and Spamhaus PBL. Sorry, it just does not work for me no more.

I am still using Spamhaus but has changed it to the xbl-sbl list. Does anyone knows if Sorbs and UCEPROTECT are any good? Anyone uses them? Any feedback? Any other good DNSBL to recommend?