Qmail & DNS blackhole lists

[igraf]

hi,
i have a problem with qmail und dns blackhole lists
when you follow entry sbl.spamhaus.org in mail preferences

then goes the qmail server button offline (see image)
the smtp service works properly

when remove the dns list entry, is qmail online (green button)

What can I do

 

[tiramisu_]

please follow up this article:

http://kb.swsoft.com/en/3954

 

[igraf]

thanks for the fast replay
yes, this is correct solution

i have spamhaus.org...
now... another dnsbl is perfect.

greetings
ivan