The internal blacklist has been zeroed out effective January 19, 2006 with the exception of forged e-mail addresses. View the current blacklist.
We are now using DNS blacklists from these providers:
dul.dnsbl.sorbs.net http.dnsbl.sorbs.net socks.dnsbl.sorbs.net misc.dnsbl.sorbs.net smtp.dnsbl.sorbs.net web.dnsbl.sorbs.net spam.dnsbl.sorbs.net block.dnsbl.sorbs.net zombie.dnsbl.sorbs.net
In addition, we are now blocking IP addresses that do not have a valid reverse DNS lookup.
When reporting a problem, please provide as much information as possible.
Typical details such as warning/error messages and/or complete e-mail headers.