michael@stroeder.com wrote:

Full_Name: Michael Ströder Version: HEAD and RE24 OS: Linux URL: Submission from: (NULL) (212.227.35.93)

It seems that modify requests which failed due to Invalid DN syntax (34) are not written to accesslog-DB. I guess that those requests get abandoned by the frontend and never reach the backend at all.

Correct.

It would be handy to see the invalid modify request in the accesslog-DB though.

Any chance to achieve this?

Not likely. The frontend must call select_backend() based on the incoming DN to determine which backend to invoke, and thus which stack of overlays are involved. If the DN is invalid, no selection can occur.