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Kopano Core does not include its own MTA, but can be integrated with all established MTAs found in modern Linux distributions. Although KC supports most Linux MTAs, we advise to use Postfix.


In order to deliver an email into a user’s mailbox, the kopano-dagent is executed. Messages are passed to the kopano-dagent from the standard input or by the LMTP protocol. The usage of LMTP is the recommended delivery method as this enable the Single Instance Attachment Storage.


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