The SMTPLookupNoDircat setting can prevent the SMTP task from uses Directory
Catalog lookups. A value of 1 will prevent users listed in the Directory
Catalog from receiving inbound Internet mail on this server.
The default value of 0 enables the Router to use any of the Extended Directory
Catalogs referenced in its configuration. If you set this variable to 1,
the Router cannot use any of the Extended Directory Catalogs referenced
in its configuration when doing a look-up for inbound Internet mail. Instead,
the Router will return a DFR (Delivery Failure Report).
This setting only pertains to servers configured to use a Condensed Directory
When absent or set to zero, this option is disabled.
Set SMTPLookupNoDircat=1 so SMTP will not do directory catalog look-ups.
This can improve SMTP performance and reduce unwanted SPAM e-mail.
Added in 5.0.12. Broken in 6.0, fixed in 6.01.
spam: Advanced SMTP settings in Lotus Domino
- BSAW5CT7N7 Product - Server
Domino Configuration Tuner:
This setting is included in the DCT
catalog of best practices.