#dominoforever | Product Ideas Portal

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Use Directory Assistance (LDAP for example) in SMTP recipient check

would like to be able to dedicate a server that is out of the domain and (for security reasons) not cross certified with inside production domain, to receive smtp mail. Recipient checking is not possible now (unless a replica of the directory is present. SMTP server should check recipient in local directory and those configured in Directory Assistance.

  • Guest
  • Nov 11 2018
  • No Plans to Implement
  • Attach files
  • Guest commented
    13 Apr, 2020 09:55am


    as you can see here:


    Lotus protector is doing what I mean (LDAP check of receipient). How can it be possible there and not possible in Domino itself ?

    Syncing person docs is not nice (that's exactly what we are trying to avoid).

  • Guest commented
    31 Jan, 2020 01:00pm



    Your solution involves doing a duplication/replica/sync of users to the server in dmz doing smtp which is exactly what we need to avoid. I still thinks this feature is needed.

    Let us chose if the performance hit acceptable.

  • Admin
    Thomas Hampel commented
    11 Jan, 2020 01:30pm

    This would seriously slow down the mail relay process as every single recipient name would have to be looked up on a remote LDAP. The performance impact would be huge. Instead you can use the DirSync task that was provided as part of Domino V11 to sync person / group objects from the LDAP into the Domino Direcotry.

  • Guest commented
    12 Nov, 2018 09:45pm

    I had a similar request at a previous job. The request was to secure the server in the DMZ as much as possible by its not having the Domino Directory referenced for lookups physically on the server in the DMZ. At that time, we had no solution.