Knowledge base
x-mq-ipcriticalemail headerNames an address the message may be sent from; repeat the header to offer several.x-mq-tagcriticalemail headerAttaches a label; repeat the header for several.x-mq-envelopeimportantemail headerSets the envelope address, overriding what the message headers imply.x-mq-maxdelivertimeimportantemail headerSets the moment after which this message is abandoned.x-mq-poolimportantemail headerNames the pool the message should be sent from.x-mq-results-queueimportantemail headerDirects this message's results to a named queue instead of the node's own.x-mq-delayedemail headerHolds the message until the given time before the first attempt.x-mq-failure-queueemail headerDirects failed results for this message to a named queue.x-mq-maxattemptsemail headerLimits how many attempts this message may consume.x-mq-retriesemail headerComma-separated intervals between attempts for this message.x-mq-retry-queueemail headerDirects notices about rescheduled attempts for this message to a named queue.x-mq-success-queueemail headerDirects successful results for this message to a named queue.x-mq-dsn-envidemail headerAn identifier quoted back in any notification about this message.x-mq-dsn-notifyemail headerWhich events produce a delivery notification for this message — never, on failure, on success, on delay.x-mq-dsn-orcptemail headerThe recipient address to quote in a notification, when it differs from the delivery address.x-mq-dsn-retemail headerWhether a notification carries the whole message or only its headers.x-mq-inlinecssemail headerMoves CSS rules into style attributes before sending.x-mq-keepmimeemail headerIncludes the full message in the published result.x-mq-smarthost-hostnameemail headerHands this message to the named server instead of the recipient's own.x-mq-smarthost-passwordemail headerPassword offered to the named smarthost.x-mq-smarthost-portemail headerPort used when connecting to the named smarthost.x-mq-smarthost-usernameemail headerUsername offered to the named smarthost.