Start/notes.ini Parameters/Allow_Passthru_Callers

Allow_Passthru_Callers

Parameter: Allow_Passthru_Callers
Short description: List of users, servers, and groups that may instruct this server to initiate a call to another server in order to establish a pass-through routing path. Corresponds to the "Cause calling" field in the server document.

Profile

Parameter
Allow_Passthru_Callers
Category
Security / TLS (Pass-Through)
Available since
At least 9.0.1 (HCL docs 9.0.1 – 14.5.1)
GUI equivalent
Server document → Security tab / Passthru Use section → Cause calling field
Possible values
Comma- or semicolon-separated list of names, groups, *Certifier, *ViewName
Default
Empty (no caller may instruct this server to perform pass-through calls)

Description

According to the HCL product documentation (14.5.1, Controlling access to a pass-through server or pass-through destination):
Cause calling — Any users or servers listed in this field can instruct this server to call -- that is, place a phone call to -- another server in order to establish a routing path to that server. If no names are entered, no calling is allowed. … The default for this field is blank, which means that users and servers are prevented from using this server to route a path to another server. … This field corresponds to the Allow_Passthru_Callers setting in the NOTES.INI file. If a conflict exists, the Cause calling field takes precedence.
Allow_Passthru_Callers defines which users, servers, or groups may instruct this Domino server to establish a connection to another server in order to set up a pass-through routing path on it. Historically, the feature originates from the modem/dial-up world: a replicator on server A uses the modem on server B to reach server C — in that case, A's replicator server name must appear in Allow_Passthru_Callers on B.
If the parameter is empty and the GUI field Cause calling in the server document is also empty, no calling is allowed.

Example configuration

Allow a specific replicator:
Allow_Passthru_Callers=Server1/Acme,Server2/Acme
All servers of an organization via certifier:
Allow_Passthru_Callers=*/Acme

Notes & pitfalls

  • The server document field Cause calling takes precedence over notes.ini if both are populated.
  • HCL note: Support for dialup modem (X.PC) connections is available only in releases of Domino earlier than release 8.5. — in modern setups the feature is barely relevant in practice.
  • Applies only to HCL Notes clients and Domino servers — Internet/intranet clients cannot use pass-through.
  • Separate multiple entries with comma , or semicolon ;.

Sources (HCL Product Documentation)