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294083Re: How to get Postfix to relay Outlook Out of Office replies with Null Sender?

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  • Wietse Venema
    Jul 1 6:31 AM
      tswmmeejsdad .:
      > \\ snippet of postfix config
      >
      > mynetworks = 127.0.0.0/8, 10.x.x.0/19
      > smtpd_sender_restrictions = check_sender_access
      > hash:/etc/postfix/access-sender reject
      >
      > My questions is - Is there a way to get postfix to allow Outlook out of
      > office replies

      Whitelist the Exchange server.

      /etc/postfix/main.cf:
      smtpd_sender_restrictions =
      check_client_access hash:/etc/postfix/access-client
      check_sender_access hash:/etc/postfix/access-sender
      reject

      /etc/postfix/access-client:
      # The Exchange server name or IP address.
      1.2.3.4 OK

      You may also need to do this in smtpd_recipient_restrictions
      (or smtpd_relay_restrictions, if applicable).

      Wietse
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