Start/notes.ini Parameters/MailEncryptOutgoing

MailEncryptOutgoing

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Parameter: MailEncryptOutgoing
Short description: Controls the encryption of outgoing emails by the Notes Client – corresponds to the matching switch in the Person document.

Profile

Parameter
MailEncryptOutgoing
Category
Mail / Router
Component
Client
Available since
8.5
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5, 14.5.1
GUI equivalent
Person document / Policy
Possible values
0 = do not encrypt (default), 1 = encrypt if a public key is available

Description

When MailEncryptOutgoing=1 is set, the Notes Client attempts to encrypt outgoing mails using the recipient's Notes / IBM public key when sending – provided that key is available in the Domino Directory. For external recipients without a Notes key, encryption does not apply (S/MIME or TLS must be configured separately). Typically, the value is not set manually but distributed via mail policies or the Person document.

Example configuration

MailEncryptOutgoing=1

Notes & pitfalls

  • Applies only to Notes mail recipients with a stored public key – external SMTP recipients are unaffected.
  • For S/MIME, a separate certificate setup in the Person document is required.
  • A value set via mail policy overrides a local entry.
  • On the server side, MailEncryptDisable is the corresponding emergency brake (server-wide).