Short Description: Specify whether to allow mail to be sent to a group name returned during directory lookups.
This variable requires that you have the option "Verify that local domain recipient exist in the Domino Directory" enabled. If you set this variable to 1, all external hosts receive a permanent error after the RCPT TO command when mail is addressed to a group. If you set this to 2, all connecting hosts receive a permanent error after the RCPT TO command when mail is addressed to a group. The default value is 0.
0 - Disable denying mail to groups. (Default setting)
1 - Enable denying mail to groups for all connecting hosts.
2 - Enable denying mail to groups for all possible relay hosts.
Controlling spam: Advanced SMTP settings in Lotus Domino