The mailing list for listmasters using Sympa

[address@concealed]

Hello,

We are using a Zimbra server for our users email, also a Sympa 
mailinglist server. I found Sympa does not sent email with unique 
Message-ID's.

Turns out this conflicts with the de-duplication feature in Zimbra. When 
multiple of our Zimbra users are on a list it drop all but one of the 
messages because of the duplicate Message-ID's.

We have turned off dedup in Zimbra and are now getting complaints of 
duplicate messages from other sources.

Does any one have a solution for this issue, anything we can do on the 
Sympa side.

Thanks, regards,

Machiel.