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Mailman privacy options- spam filtering

Header Filter Rules

header filter rules screenshot

The header_filter_rules set a list of filters for Mailman to check. Those matching will be Held, Rejected, Discarded, or Accepted as set for the rule. Defer turns off a filter rule until you again select either Hold, Reject, Discard, or Accept. For additional assistance with this, please contact


Bounce Matching Headers

bounce matching headers screenshot

The bounce_matching_headers allows you to set specific regular expressions that Mailman will search for in message headers an then hold that message for moderation. For example, the ‘from: .*’ line in the image instructs Mailman to hold any message from any email address that ends in