I use dnsbl feature in Sendmail. I also use the delay_check feature and set whitelist in access_db, below is the sample
Connect:xxx.xxx.xxx.xx OK
From:xxx.com RELAY.
What I want to do is add domain xxx.com to dnsbl's whitelist and sub domain of xxx.com just use the normal check.
When I user [From:xxx.com RELAY], all of the sub domain will be white, is there anyway to avoid it ?
Thank you