Which conditions must be met, in order for gnarwl to send out an autoreply?

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  1. The incoming mail must not contain a headerline, matching a line in the
    badheaders database.
  2. The mailheader must specify a sender and at least one recipient
    (naturally).
  3. The header must not contain more than "maxheader" lines.
  4. The mail may not specify more then "maxreceivers" addresses in the
    according header(s).
  5. Last action for a sender/recipient pair was at least "expire" hours ago.
  6. The receiving email address must not be in the blacklist database.

Points one to four refer the complete mail, that is, if one condition is not met, the complete mail is ignored. Points five and six refer to a single receiving address specified in the mail, that is, if one condition is not met, only this email address is ignored, if the mail specified multiple recipients, they'll all get their chance.