From SME Server
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The first functionality is a SME dedicated DNS Blacklist which is partially based on the user contributions. With SME Optimizer you provide data about your spam rejects and in return you get access to a large DNS blacklist. This blacklist is both providing IP as well as URI based lists and comes as a configuration option to SpamAssassin. The DNS Blacklist has as of today (October 2016) around 1.4 mio. Spam, Malware and Ransomware IP addresses as well as around 350,000 URIs. These will be provided as part of the DNS Blacklist.
The second functionality is remote monitoring of your SME server. The system will on a daily basis check whether your server (it IP address) is listed in international DNS blacklist. Further more it will on an hourly basis check whether your server for SMTP availability.
You can check the current status by issued the command line option --status
Contact Email : email@example.com
You can always see the different configuration options by issuing the --help command.
Command line options: