As I kown,for performance,Lotus Domino will get the DNS blacklist from the DNS blacklist sites and save it in memory.
So,it is not real time?
For example:
2016/08/30 09:37:46 SMTP Server: iZ28mxuzo2dZ (27.75.142.47) connected
2016/08/30 09:37:49 SMTP Server: 41.225.94.52 connected
2016/08/30 09:37:49 SMTP Server: iZ28mxuzo2dZ (27.75.142.47) disconnected. 1 message received
But the query result from spamhaus.org is as below:
IP Address 27.75.142.47 is listed in the CBL. It shows signs of being infected with a spam sending trojan, malicious link or some other form of botnet.
It was last detected at 2016-08-30 04:00 GMT (+/- 30 minutes), approximately 1 hours ago.
This IP is infected (or NATting for a computer that is infected) with the necurs spambot. In other words, it's participating in a botnet. If you simply remove the listing without ensuring that the infection is removed (or the NAT secured), it will probably relist again.
My question is : is it not real time or How long it updates?
