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Add a second reason to review email from servers now listed on a dnsbl
===Display messages that would have been blocked via DNSBL===
===Display messages that would have been blocked via DNSBL===
From time to time I try out new DNSBL services. Some of these generate instant complaints from my users about correspondents who can no longer send us email.
This command has two objectives -
# Testing a new dnsbl service<br><nowiki>
Show you what emails would have been blocked by a new dnsbl service.</nowiki><br><nowiki>
From time to time I try out new DNSBL services. Some of these generate instant complaints from my users about correspondents who can no longer send us email.</nowiki>
# Review queued messages from servers that are now listed<br><nowiki>
Reviewing recently received emails that were queued by the mail server from hosts that are *now* listed on a dnsbl can be used to look for patterns that might help you tune your spam filter settings.</nowiki>
The command below will:
The command below will: