We have problem in our Lotus Notes/Domino environment, sometimes users recieve two identical emails (at the same time) from a recipient.

I am not sure, but I think this happens if I send an email to a group of people using email address and someone in that group respond or respond to all. (i.e there is a group in domino directory that can be sent to using an email address like group1@acme.com)

so even if the email address is to the "internal company" it seem to take a trip to the internet maybe?

anyone else seen this?

We are running latest version on Server and client (8.5.3)


A notes.ini parameter was introduced to fix this in Notes 8.5.3

See here Duplicate message received when recipient also member of group being sent to https://www.ibm.com/support/docview.wss?uid=swg21266166


You are probably seeing "Duplicate messages are received when 'Exhaustive Lookup' is enabled"

Lotus Notes recipients sometimes receive duplicate messages when "Exhaustive Lookup" is enabled in a Domino server's Configuration Settings document's Router/SMTP > Basics tab.


This scenario can occur if an internal Notes user sends a message to an internal Notes recipient and to a group of which that recipient is a member, depending on the format of the addresses.


Resolving the problem

This issue was reported to Quality Engineering as SPR# KGEW6FVUGB.

To resolve the issue, disable "Exhaustive Lookup" in the Configuration document on the Router/SMTP Basic tab.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.