Thanks for your reply.
No, I never enabled anything to mirror from one server to another!
The weird thing is that the maildomain is available on the master (mailserver1.example.com) AND on the slave server (mailserver2.example.com).
This explains why the client can logon to both mailservers.
BUT: this is only the case for 2 new mail domains which are created with ISPConfig 18.104.22.168. (After my last recent upgrade)
The mail domains which are created before this version (ISPConfig 22.214.171.124 - ISPConfig 126.96.36.199) are only on the mailserver where they belong.
I checked every server under "System" > "Server Services".
Every server is active, but every field "Is mirror of Server" shows "-None-"
Because, i'm absolutely sure that i did not enable mirroring, i'm thinking about a bug. What else can it be, any suggestions?
Are you able to reproduce this?
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Last edited by Hans; 24th June 2010 at 12:03.