Different itenms between 2 domino servers

hello,

I have 2 dominos servers, One domino server is on the lan, and the other is on the DMZ.

the mail databases are on the lan servers, and there is a replication between the lan servers and the dmz servers.

The problem is that the number of items and the mail database size are differents on the 2 servers, sometimes the mail database size on the dmz is the double than the lan server

when i make a manual replication, i have got an error like : failure to replicate…

Does anyone have the same problem ?

Thanks